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Thielke Name Study

Privacy Level: Public (Green)

Surnames/tags: thielke tielke tilke
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This is a project that I hope will become a valuable reference point for any Thielke researchers alike to share their knowledge by posting their DNA tests, resources, pictures, stories, and anything else of interest to this surname.

Please join by contacting the project leader, Brian Zalewski. See the section on goals and what you can do below. Post questions and comments to the bulletin board and add details about your particular area of interest.

The Thielke surname is North German: from a pet form of Thiel 1. Eastern German: variant of Thiel 2.

Then, looking at the Thiel name: North German and Dutch: reduced form of the personal name Thietilo, an early medieval pet form of Dietrich (German), Diederik (Dutch), or from some other compound name with the same first element. Eastern German: from a short form of Sorbian Bartyl, from the personal name Bartholomäus (see Bartholomew).[1]



This surname study is still very new. Currently, it mainly includes Thielke lines from the Wisconsin area. The main goal would be to try to at least connect some of these lines back to Germany and other areas where the Thielke name seems to originate.

The purpose of this study is to bring together any Thielke descendants who are willing to work together to establish an accurate Thielke Family tree by using the best possible sources available for documentation to make new connections. There are many spelling variations (i.e., Thilke, Tilke.)

How to Add a Profile

To add an active profile to this project, add {{One Name Study|name=Thielke}} template to that person's profile, and that will add a new family line to the Thielke Name Study category.

To add a Thielke profile to the Thielke Name Study, just add [[Category:Thielke_Name_Study]] to the profile.

What Can I Do?

If you've put up all of the Thielke individuals in your family (or at least all the ones you've found so far), and are looking for something else to do, here are some tasks that you might be willing to help with:

  1. Biographies:
    • We need to make sure that each Thielke on WikiTree has a narrative biography containing all the genealogically relevant facts about them (birth, marriage, and death at the very least). For information on biographies, see the Biographies help page.
  2. Categories:
    • We need to make sure that each Thielke on WikiTree has the appropriate categories applied to their profile. For information on categories, see the Categorization help page and the Categorization Project.
  3. Connecting:
  4. Merging:
    • We need to merge any duplicate profiles for the same person into one profile for that person. For information on merging profiles, see the Merging help page.
  5. Sourcing:
    • We need to have sources for all the profiles on WikiTree. Specifically, we need at least one (and preferably more) sources added for all the Unsourced Thielke profiles on WikiTree. (This can count towards the Sourcerers Challenge if you're feeling competitive.) For information on sourcing profiles, see the Sources help page and the Sourcerers Project.
  6. Thielkes in Wikipedia:
    • We need to make sure that all deceased Thielkes with Wikipedia entries have profiles on WikiTree, and are sourced and connected to the main tree.


DNA is becoming a very important piece to our genealogy research toolbox. As they say, DNA doesn't lie. Currently, we're only aware of a few Thielke descendants who have been tested and are available on GedMatch.

There are a few other Thielke tested on 23andMe and Ancestry.

See other Thielke profiles that are connected to DNA tests on WikiTree.

Country of Origin

Current research points to modern day Germany being the origin of the Thielke surname. Thielke Line A (see below) originates in the Mecklenberg/Schwerin area of Germany, specifically the village of Bernitt between Schwerin and Rostock. Line B seems to from the more Prussian areas.

Thielke Lines

Here are some Thielke lines that are available. Currently, most of these lines are from the Wisconsin area, please help by adding more.

You can also see all profiles linked to the study by viewing the Thielke Name Study category.

ID Earliest Ancestors Earliest Date Earliest Location Current/Main Location Y-DNA GEDMatch ID(s) Notes
A Heinrich Peter Thielke / Marie Dorothea Specht 1839 Bernitt, Bützow, Mecklenburg-Schwerin, Germany Ozaukee, Wisconsin, United States PT5895258, PX9561579
B Carl F W Thielke / Dorothea Sophia Mueller 1820 Neumark, Merseburg-Querfurt, Sachsen-Anhalt, Germany Manitowoc, Wisconsin, United States M957360


The most common way that the name is pronounced is with a hard "Th" like Till-key. Though, I have heard other people pronounce it as Thill-key. While in Germany, it is sometimes pronounced like Till-ka.


  1. Source: Dictionary of American Family Names ©2013, Oxford University Press'

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