Using DNA to point us in the right direction beyond the ancestral line we already know seems to be a logical step...until we hit a brick wall. When I work on my father's Polish ancestors, I already know I'll have that challenge. I've seen it this month as I worked on my second great-grandmother Susanna Radomska, and I'll be running into the same challenge, now that we're making an early transition to the November challenge for my Twelve Most Wanted for 2026, Franciszek Jankowski.
Franciszek, my second great-grandfather on my paternal grandmother's mother's line, is yet another of those ancestors for whom I have very little documentation. In other words, the trail to that man's ancestry is not clear to me. Tools like Ancestry.com's ThruLines won't help much, despite the chart showing I am connected to the DNA tests of ten other subscribers who also claim this ancestor.
There was a slight stroke of good fortune in even finding that detail. On the transcription for the 1854 marriage record of Franciszek and his wife, Franciszka Olejniczak—whom we'll be studying for the last month of this year—both the bride and groom had their parents' names listed. So technically, when I say I have ten results on my ThruLines for the Jankowski family, I'm really looking at ten people who also claim Franciszek's father, Jan, as their ancestor.
But clicking through to see who those ten DNA cousins are, I don't see anything particularly helpful. Why? Those ten people are relatives who are much closer than the anticipated third or fourth cousins linked to Franciszek or his father. I already know who those people are. They are relatives who are more immediately connected to me as descendants of cousins or even half-siblings.
How to find DNA matches who descend from, say, third great-grandfather Jan Jankowski, is the real question. No one else has shown up on Ancestry's ThruLines. At first, this made me wonder whether those diseases and wars that cut short the lives of so many descendants in the Jankowski family—in fact, most of the rest of my father's Polish ancestors—had made a thorough job of the demolition of these people groups. But I'm finding signs that there were, somehow, additional survivors.
In a zigzagging route from one DNA match to shared matches, and then beyond to their shared matches, I'm finding distant cousins whose immigrant ancestors settled in places like Chicago or Michigan or Wisconsin, much like I had found when researching other parts of my paternal line. Seemingly disconnected from the rest of their family—or perhaps without any concept of how large the distance between one American city and another for these immigrants—these immigrants began life after their journey and stayed in that one place for generations.
The trees of their descendants show such a story, but rarely seem to explain how they connect back to Poland. I'm wondering whether DNA will ever be able to explain the story. In combination with the use of multiple Polish websites, partnered with what can be found at FamilySearch.org, double-checking the assertions and assumptions displayed on each match's tree may be one way to find the answer. But with such small matches, the risk of telescoping results—is it this fourth generation which produces the match, or one even farther beyond that?—makes me heed the warning to proceed with caution.
Hopefully, a first step this coming week of cross checking family records at FamilySearch with archival records linked to the BaSIA transcription project will shed some light on missing generations in the Jankowski lines of descent.
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