Greg Clarke
Privacy Level: Private with Public Biography and Family Tree (Yellow)

Greg Clarke

Honor Code Signatory
Signed 7 Mar 2018 | 4669 contributions | 187 thank-yous
Communication Preferences: I am interested in communicating private message with anyone who shares the same genealogical or historical interests. Here is my family tree. Ancestors ancestors
I have also developed a number of WikiTree Apps, which you can view on my Apps home page. The most popular one to date is the Fan Chart app which can be accessed directly from the Family Tree & Tools page. I am also a part of the DNA Innovators team, and have recently made a DNA Confirmation Citation maker app.
Greg P. Clarke
Born 1960s.
Ancestors ancestors
Brother of [private sister (1960s - unknown)], [private brother (1960s - unknown)] and [private sister (1970s - unknown)] [half]
Father of [private son (1990s - unknown)], [private daughter (1990s - unknown)] and
Profile manager: Greg Clarke private message [send private message]
Profile last modified | Created 6 Mar 2018 | Last significant change: 1 Dec 2021
00:08: Admin WikiTree added the November 2021 Club 100 badge for Greg Clarke. [Thank Admin for this]
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Greg Clarke was adopted 3 Dec 1965
Location: Uptergrove, Ontario, Canada
Adoptive Parents Biological Parents
Father: Patrick Joseph Clarke Father: Dwight Ashley Douglas
Mother: Mary Bernadette McIsaac Mother: Pauline Denise Marcoux)


I was born on January 16th, 1964, and originally named Kelly John Douglas. As my birth parents were both young teenagers, as was common, I was given up for adoption. Eventually I was officially adopted by Pat and Bernadette Clarke, farmers from Uptergrove, Ontario, Canada, and my name officially changed to Gregory Patrick Clarke - the only name I ever remember answering to.

I went to Uptergrove Public School, Twin Lakes Secondary School in Orillia, the University of Waterloo (BMath, 1988) and University of Western Ontario (BEd, 1988). I became a high school Mathematics and Computer Science teacher where I have worked for the Simcoe Muskoka Catholic District School Board since. In my last ten years, I was part of a special project developing online activities to help students with mathematics, housed at

In November 2017, I did the Ancestry DNA test, and along with the Ethnic mix (47% Great Britain ; 29 % Ireland/Scotland/Wale ; 10% Iberian Peninsula ; 6% Europe South) - I also had matches to some cousins I never knew - including a 1st and 2nd cousin (who turned out to be a 1st cousin once removed!). After applying for a copy of my original birth certificate, and discovering the actual names of my birth parents (Dwight Ashley Douglas + Pauline Denise Marcoux) - I was able to find out exactly how I was related to these new cousins, and discovered that in fact, I had a full sister and full brother (my parents stayed together and got married!), and a half-sister (from my dad). Emails, phone calls, and eventually meeting face to face has now reunited me with a family I never knew I had.

On June 30, 2018, I retired from education, after a very enjoyable and fulling career of thirty years. I am now the Music Director for Guardian Angels parish in Orillia, Ontario, Canada, as well as the webmaster for the Ontario Association for Mathematics Education (, which I have done for the majority of my teaching career, and plan to continue for the foreseeable future in my retirement. In between church music and website work, I'm now enjoying the freedom to explore lots of family tree branches, and working with WikiTree.

Related to that - I have created a number of WikiTree apps, you can view them all on my Apps home page

  • Ancestry Citation Builder - allows you to create links to sources or images for citations that other Wikitreers can view, even non-subscribers.
  • Drouin Citer - allows you to create citations for the Drouin Collection found on
  • Relative SpiderWebs - a family tree visualization app that allows you to see multiple connections between two WikiTree profiles - especially useful with endogamous family trees


  • First-hand information. Entered by Greg Clarke at registration.
  • Birth Certificate of Kelly John Douglas, Registration 64-05-014057, obtained from Service Ontario, Province of Ontario, Personal copy in the files of Greg Clarke
  • Adoption notice of Gregory Patrick Clarke, Registration 005956, Dec 3,1965, O.B. Folio 2118, from County Court of the County of Ontario, obtained from Service Ontario, Province of Ontario, Personal copy in the files of Greg Clarke
  • Paternal relationship is confirmed by an AncestryDNA test match between Greg Clarke and his second cousin, TK. Their most-recent common ancestors are their great grandparents, Herbert Douglass and Sophia Robb. Predicted relationship from AncestryDNA: 2nd Cousins, based on sharing 221 cM across 11 segments; Confidence: Extremely High.
  • Maternal relationship is confirmed by an AncestryDNA test match between Greg Clarke and his second cousin, JL. Their most-recent common ancestors are their great grandparents, Donat Cloutier and Marie Anne Trudel. Predicted relationship from AncestryDNA: 2nd Cousins, based on sharing 232 cM across 12 segments; Confidence: Extremely High.

More Genealogy Tools

Only the Trusted List can access the following:
  • Greg's formal name
  • full middle name (P.)
  • e-mail address
  • exact birthdate
  • birth location
  • images (2)
  • private siblings' names
  • private children's names (3)
  • spouse's name and marriage information
For access to Greg Clarke's full information you must be on Greg's Trusted List. Please login. See the Contact section of the Tree & Tools page.

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DNA Connections
It may be possible to confirm family relationships by comparing test results with Greg or other carriers of his ancestors' Y-chromosome or mitochondrial DNA. Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
  • Greg Clarke: Family Tree DNA Y-DNA Test 700 markers, haplogroup R-FT8360, FTDNA kit #IN45890, MitoYDNA ID T12923 [compare]
Mitochondrial DNA test-takers in the direct maternal line:
  • Greg Clarke: Family Tree DNA mtDNA Test Full Sequence, haplogroup H3t, FTDNA kit #IN45890, MitoYDNA ID T12923 [compare]
It is likely that these autosomal DNA test-takers will share some percentage of DNA with Greg:

Have you taken a DNA test? If so, login to add it. If not, see our friends at Ancestry DNA.

Comments: 38

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Hi Greg,

How impossible would it be to get Relative Spiderwebs working for multiple (think four, five, etc.) profiles? I can run the combinations separately and then posit connections by comparing, but it is exactly what I would like to see to lay out how multiple lines connect to each other.

I have a couple of sample profiles you could use for testing if you think it would work.


posted by Jonathan Crawford
Wow ... that would be cool indeed! I don't think impossible, but would take some thought. This was the first app I created, so it's a little rough around the edges. Let me think about this. Thanks Jonathan.
posted by Greg Clarke
I very much like the fan chart app you have created. I just wondered if you have considered creating a table version. To see what I mean check out my profile under the heading Progress on my tree. I did this manually based on my software but it would be great if you could create something like this with an app and then paste it on your profile, as with the surname generator, which I also use and love. I know the same information is shown but then it can appeal to visual people or stat people using the fan or the table. Thanks
Hi Greg,

I'm trying to use your wonderful Fan Chart app to create wall art for relatives. Do you have any plans to support "Highlight DNA Confirmed" on the .pdf creation option? I tried doing a screen grab, but the graph the snipping tool saves doesn't scale up to poster size well enough. I know that the "DNA Confirmed" data might not seem like a candidate since it's dynamic, but I'd like to show it to encourage more cousins to get tested. Thanks! Bernard Ellis

posted by Bernard Ellis
Hi there Bernard! Interesting question, and I am glad you asked. I had thought that about it, just like every feature I add to the fan chart because I essentially have to program it twice, once for screen, once for PDF . This was one feature that I didn’t think people would want or need on a printout, so I left it off. I like your reasoning though, so I will add it to the list of updates for when I revisit the app. Thanks again!
posted by Greg Clarke
From your friends at the Appreciation Team:

Congrats on the Super Star Badge!

posted by SJ Baty
I enjoyed the fan family tree in Wiki news today. Thank you for your clever projects.
You're most welcome Margaret! Thanks for letting me know.
posted by Greg Clarke
The fan app is amazing. It showed me all the gaps in my research and has become my favorite tool!
posted by Susan Hildebrant
Thanks so much Susan! So glad you're enjoying it - it's been fun putting it together (when things work ...) :-)
posted by Greg Clarke
Hey Greg. You and Chris did an awesome job on the Family History Fanatics presentation. Between this sort of thing, your apps, and your impressive profiles, you have become one my all-time favorite WikiTreers.
posted by Chris Whitten
Hi, Greg!

Thank you for your participation in October 2020’s Source-a-thon. Your contributions helped us to clear over 57,000 profiles that needed sourcing. This makes our Shared Tree all that much better.

Keep up the great work!

Pippin Sheppard WikiTree’s Appreciation Team

posted by Pip Sheppard
Greg, loved the Live Webinar this morning on FB. I am really glad I checked in and explored the fan chart tool. It's so amazing! You are so generous to spend so much time on it and share it with WikiTree. Such a dynamite app.

In appreciation with all your work here, Maggie (aka Magda Maria)

posted by Maggie N.
Hello, Greg!

Thanks for all the work you accomplished during our Connect-A-Thon 2020. It is amazing how many more profiles were created and added to our Shared Tree. You have every right to be pleased with your efforts!

Kind regards,

Pippin Sheppard ~ WikiTree’s Appreciation Team

PS: Very cool the church choir directing. I dabbled a little in that myself over the years.

posted by Pip Sheppard
Hi there, Greg!

Thanks so very much for your participation in the spring Clean-a-thon! Every suggestion you cleared made our Tree that much better. The WikiTree community appreciates YOU!

Pip Sheppard WikiTree’s Appreciation Team

posted by Pip Sheppard
I want to congratulate you on your Family Star award you received on April 23, 2020.

John Williams

posted by [Living Williams]
We are 9th cousins. Family is growing.
posted by Susan Dion
We are 7th Cousins! Have a great day!
Hello Cousin Greg,

Greg and Janine are 25th cousins once removed

Cousin, Janine

Greg, it's great to see you as the Member of the Week! I enjoyed reading your interview. I look forward to seeing how we're connected tomorrow.

I'd like to hear more of your thoughts on this: "It would be nice if there was a way to easily link DNA matches (from Ancestry, 23andMe, etc…) who are WikiTreers to your profile."

I'd really like a better way to track my own matches. Those who are WikiTree members and those who aren't. But if they aren't it has to be done privately, and that's really getting far afield from our mission.

posted by Chris Whitten
Thanks Chris,

OK ... how could we easily link DNA matches? Easy to say, maybe not as easy to implement. Here are some initial thoughts.

  • We already have a place to enter any DNA tests you've taken personally, haplogroups, and IDs with various companies,
  • Also, on the DNA Confirmation page, it lists under each ancestor any potential WikiTreers who have done DNA tests that MIGHT also be related - though - it was only recently that there were any test results that were not my own on this page

--> SO .. if THOSE names of those potential DNA matches (who are not my own personal DNA test results) could be collected in one location, along with their DNA test details (company / results / user ID ), then it would be easier to narrow down who to check on . --> Going one step further - IF I myself have tested at the same company as another WikiTreer who might be a potential match (from the list above) - I wonder if there is a way to generate a URL link that could take us directly to that company's website and do a comparison between the two userids (mine and the potential match). Sort of how we have that ability with GEDcom right now (if you're logged in already). That of course depends on the individual company and their APIs, and so that might be dreaming .. --> FINALLY, if we DO find that John Smith on WikiTree is also a DNA match based on a company DNA test result, it would be nice to have a way to record that in our profile, and then pull it up on a list somewhere for reference (or for our cousins to reference so they can compare their results too). This might be something that needs both WikiTreers to agree to this information being public before it can appear on a list that others can view.

That's kind of a long winded answer - not sure of the logistics of any of it, how easy/hard to do, but, that's my initial thoughts on the matter.

Take care, -Greg

posted by Greg Clarke
Testing the new comments feature for me
posted by Greg Clarke
Greg, I wanted to award you the Community Star but see that it has already been done. You have done such a great job on the Ancestry citation builder app, and many people have noted their appreciation in G2G. I'm so grateful that you took time to do this. As a non-Ancestry person, I have already benefitted from the results of this link.
posted by Cindy (Bourque) Cooper
Hi Greg, We are now 6th cousins through Joseph (Marcou-15) Marcoux our 5th Great Grandfather with over 200 ancestors in common including a Plantagenet. I am seeing related branches and new names to research.

Happy Wikitreeing! We also have a DNA match!

Cousin Angela Boyer-3525

posted by Angela (Boyer) Cortner
edited by Angela (Boyer) Cortner
Hi Greg

Thank you so much for responding to our check-in. We are delighted that you wish to continue contributing to the Canada project. Below is a quick checklist for active members. The project leaders would like you to make sure you have done the following:

1) Checked the Project Page for ways to contribute

2) Added CANADA to the tags you follow.

3) PM the project leaders with your email address to be added to the Google Group

4) Bookmarked the Activity Feed to monitor the project watchlist

Thank you

Janet~ Volunteer Coordinator

Enjoy the wedding and the Thon-prep work is Key

posted by Janet (Langridge) Wild
Hi Greg

It has been a couple of weeks since we contacted you about your participation in the Canada and as we haven't heard from you, we are following up to make sure you wish to remain a member.

We understand that interests shift as we grow our shared tree and that some members may have moved on to projects more pertinent to the branches they are currently building. If this is the case for you, please let us know.

If we do not hear back from you within the week, we will assume you have moved on to other things for the moment and remove you from the project. Please know that you will always be welcome to rejoin should your interests shift back in this direction.

Thank you so much for your participation; we genuinely appreciate it.

Janet~ Volunteer Coordinator

posted by Janet (Langridge) Wild
Hello Greg

On behalf of the Canada Project Leaders, we are doing a six-month check-in with members. Please let us know if you are still active in the Canada project. If you are active, please let us know in which ways you are currently contributing to the project.

All of us at WikiTree would like to thank you for your contributions and hope that you are enjoying exploring your roots.

I look forward to hearing from you soon.

Janet ~ Volunteer Coordinator


If you joined the project only to show your connection to an ancestor, please consider using a Canada Stickers on your profile instead of the project badge

posted by Janet (Langridge) Wild
Cool, Greg! Thanks to your MtDNA test I found that we have a common female ancestor: Jeanne-Geneviève Cerisier-3 who was born way back in 1641 !
posted by Susie Humbeutel
Thank you for participating in the 2019 Scan-a-Thon with the Mighty Maple Leaves, Greg. I think we did a mighty good job : )
posted by Laurie Cruthers
Hi Greg,

For the latest news on the Scan-a-Thon, please check out the Mighty Maple Leaves chat page:

posted by Laurie Cruthers
Hi Greg,

I’m leading the Mighty Maple Leaves team for the first Scan-A-Thon from January 11-14 and am writing to invite you to join our team again. We’ll be adding original images to open profiles and free-space pages. Like the previous “thons,” this is a competition, but most of us will be doing it for the sake of preserving our family history and enriching our ancestors' profiles with everything from photos and sketches to letters and postcards.

More information: Scan-a-Thon Help Page

Registration: Registration Page: Click the Answer Button to Register

Mighty Maple Leaves Free-Space Page: Mighty Maple Leaves

I do hope you’ll join, even if it’s only to upload and share a few family photos.

Cheers, Laurie

posted by Laurie Cruthers

Je viens de lire votre courte biographie. It just shows how life can be generous if you give time to learn.

With such a background, how and where did you learn such a good French language knowledge?

Happy to have ou aboard WiliTree.

posted by Gaston Tardif

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