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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.)

What Can I Do?

  1. Work together with other Thielke profile managers to create the best Thielke tree possible.
  2. Add the Thielke Name Study category to profiles.
  3. It's always best to look for original rather than derivative documentation and add sources to your Thielke profiles.
  4. Write comprehensive, well-sourced biographies.
  5. Check for duplicates and request merges.
  6. If you are a male with the Thielke surname or a variant and haven't already, please consider testing your yDNA through Family Tree DNA so that we can all have a better understanding of our heritage and possibly make new discoveries.
  7. Do you have a Thielke profile you are especially proud of? Let Brian know and we can feature it on this page.


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. Brian's Thielke line seems to originate in the Mecklenberg/Schwerin area of Germany, while other lines are 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 Henry Peter Thielke / Marie D C Specht 1813 Mecklenburg-Schwerin, Germany Ozaukee, Wisconsin, United States M092030, A456440
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.

Helpful Links

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

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