GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2004-12 > 1104256556
From: "Phil Goff" <>
Subject: Re: [DNA] MRCA = 800 AD
Date: Tue, 28 Dec 2004 12:55:56 -0500
It seems to me that this could only be proven by testing "up the ladder,"
perhaps 10 generations at a time (in the two different lines) and tracing
the mutations back in time. This would provide an unbroken chain of DNA
evidence back to the MRCA. First, however, you need a solid paper trail.
This exercise and the assertion of a 44 generation genealogy would seem to
be quite a stretch, to me. Thanks.
----- Original Message -----
Sent: Tuesday, December 28, 2004 12:13 PM
Subject: [DNA] MRCA = 800 AD
> Ok, heres one for the books.
> I just received an e-mail from a fellow in Normandy who provided me with a
> 44 generation chart of his line back to Eystein "Glumra" (d 879 AD).
> Eystein had two sons, Ragnvald (the ancestor of my correspondant) and
> Oulry whose 4th great grandson was Waleran, comte (count) de St. Clair.
> One of my Shetland participants, surname Sinclair, appears to be a
> descendant of the original Norman family of St. Clair (many with the
> surname Sinclair adopted this name so only a few will be direct
> descendants of the famous family).
> The fellow from Normandy, who I will call Jean, and my Sinclair
> participant match on 19 of 25 markers with some individual marker values
> being very rare. The motif is DYS390=23, DYS391=11.
> It is possible that we are seeing what has to be the earliest documented
> MRCA between two individuals. Since there are so many generations where
> non - paternity events could have taken place, I am unclear as to whether
> this is an identical by state or identical by descent situation.
> Would someone who is more adept at stats than I kindly determine the
> expected number of mutations in 90 transmissons (45 for each man back to
> the alleged common ancestor) using both the standard mutation rates (e.g.,
> .028) and those arrived at by FTDNA recently for their first two panels.
> David F.
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