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Corson Surname DNA Project Newsletter - 19 Aug 2005 

Hello everyone, 

Since last month’s report, two participants have signed up and two new sets of results arrived. 



17 participants, 16 test results reported 

Genetic matches: 2 sets of three, 2 sets of two, 6 unmatched 

Genetic family lines: 10 (7 in haplogroup R1b; 1 each in I1a, I2*, and E3b) 

Average time for lab to process a DNA sample: 10.6 days 

Average time from sign-up to receipt of test results: 35.7 days


Division I (New England) – 3 participants, 3 results

No news since last month. We are still looking for male-line descendants of Samuel Corson (1719-1810) (Div. I-D) and Ichabod Corson (c.1725-c.1800) (Div. I-F) who would be willing to participate.

Division II (Sussex Co., NJ) – 2 participants, 2 results

No news since last month. More participants from this Division are welcome; their results could help strengthen the assertion that we know progenitor Jan Corszen’s genetic signature.

Division III (Staten Island, NY) – 4 participants, 3 results

A Vroom descendant who traces his ancestry to progenitor Cors Pietersz through his son Hendrick Corssen Vroom (1653-1690) joined the project this week. His results may help determine which of the two genetic signatures found in participants who document their descent from Cors Pietersz actually belonged to Cors. As before, we are still looking for male-line descendants of Benjamin Corssen's brothers Jacob Corssen (1681-1742) and Christian Corssen (1676-aft. 1764) to participate.

Division IV (Cape May Co., NJ) – 4 participants, 4 results

A descendant who traces his ancestry to progenitor Carsten Jansen through John Corson (ca. 1660-1728) received his results last month. His results match those of two other participants, one who traces his ancestry to Carsten through Peter Corson (ca. 1660-1731), and another who traces his ancestry to William Corson, Jr. (bef. 1765 – aft. 1823), of unknown origin. We now have two different genetic signatures from participants who document their descent from Carsten Jansen; unfortunately, only one of the genetic signatures could have belonged to Carsten. We need to find at least one more participant from this Division to resolve the uncertainty about which genetic signature belonged to Carsten.

Division VII (Hunterdon Co., NJ) – 1 participant, 1 result

No news since last month. The participant from this brick-walled Division has yet to match anyone closely.

Division VIII (Colsons not derived from Corsons) – 1 participant, 1 result

A Colson descendant who traces his ancestry to progenitor John Collson (b. ca. 1708, Massachusetts) joined the project this month. He belongs to one of at least three major Colson lines in the U.S. (others, such as those from Weymouth, MA and the southern U.S., are listed at ). His results closely match certain Scottish genetic signatures and suggest that John Collson may have been related to Clan MacColl. The large difference between his genetic signature and that of participant #12 (a Corson-derived Colson) means that we can begin to determine descent from a particular Colson line with a DNA test alone, as we can with certain Corson lines. We’re beginning to contact other Division VIII Colsons in the hope that descendants of other family lines will participate.

Divisions XIII, V, VI, and IX – no participants

No news since last month. We're still planning to recruit living male-line descendants of Daniel Corson (1763-1849), who moved from Sussex County, NJ to Ontario, Canada. We're also searching for participants with ancestors from European Corsan / Courson / Curzon / Korson families.

Unconnected – 2 participants

No news since last month. No close matches have been found for these participants on any public Y-DNA database (e.g., Ysearch, Ybase).


About 100 of the surname-focused mailing lists at now have accompanying DNA-related mailing lists. Last month, I asked RootsWeb to set up a CORSON-DNA mailing list, mainly to give the project a little extra web- and RootsWeb-presence and to prepare a forum for detailed discussion of the project or DNA-related topics, if we should need it. For now, I plan to post only project updates there. Unlike administrators of some surname mailing lists, the one for the CORSON mailing list, CCFHA board member Jeff Owens, allows free discussion of DNA-related topics. So, unless we begin to discuss DNA-related minutiae (e.g., triangulating ancestral haplotypes, calculating time to MRCA using the infinite alleles model), I’d like to keep discussion of genetic genealogy on the CORSON mailing list. You can find instructions for subscribing to the CORSON mailing list or CORSON-DNA mailing list at . As you may know, RootsWeb mailing lists also exist for the surnames COLSON, COURSON, and COULSON (but not for CORSA or VROOM, apparently).


The CCFHA still has a $40 reimbursement of test costs available for one more participant. We may be able to find additional funding for participants whose results would help us establish progenitors' genetic signatures. Those unable to submit a DNA sample directly (e.g., not descended in the direct male line) can participate by helping to subsidize the test cost for someone else. For many people, the test cost ($195) is the greatest barrier to participation. Please contact Michael Corson if you would like to help subsidize a portion of a participant’s test cost.

If you have any questions about the project, interpretation of test results, or genetic genealogy in general, please contact me. If you’d prefer not to receive the newsletter, just ask me to unsubscribe you. The project website contains current and back issues of the newsletter that you can browse. If you know someone who would like to receive this newsletter, please ask that person to send me an e-mail address to subscribe.

Corson DNA Project website: