Results From YDNA-Based Analysis
The Group-II Conundrum
The project thus far has only three participants (Richard L., Walker, and Sean Brian) who have been categorized as "Group II" on the basis of YDNA markers. The paper-trails of Richard L. and Walker convincingly show descent from Matthias Gossett (b 1736, PA; m. Mary Littler). Sean Brian's paper-trail goes back as far as Enoch (b 1838, PA), with no known link from Enoch to Matthias (b 1736).
On the other hand, we have three other participants (John Gibson, Charles Warren, and G. Charles) whose paper-trails also appear to trace back to Matthias (b 1736, PA), but whose YDNA markers clearly put them into Group-I. The conundrum is depicted below:
The claimed lineages of the three Group-I participants are coded in blue; those of the three Group-II participants, in yellow. The YDNA results of John Gibson, Charles Warren, and G. Charles suggest close relationship to each other. The YDNA results of Richard L., Walker, and Sean Brian similarly show close relationship among the three. However, there is only a 5% chance of a shared ancestor between the "blues" and the "yellows" within the past 700 years. Clearly both groups cannot be biologically descendants of Matthias (b 1736).
Additionally, we note that, while few of our participants have had deep-clade haplogroup analysis, Sean Brian has. While he is in the same, over-arching, R-M269, haplogroup shared by all Group-I and Group-II Gossetts, deep-clade analysis places him in subgroup R-U152 -- following a different branch-point from P312 within R-M269 than Group I's Charles Warren and James Michael, who both follow a branch passing through DF27.
Could the results be explained by the occurrence of an Unknown Paternity Event (UPE) [also commonly known as a "Non-Paternity Event, NPE," a term we don't prefer because there is no such thing as "non-paternity;" every child has a father, it's merely that we do not always know who he was.] A UPE is one where, in this case, the Gossett YDNA link from father, to son, to grandson, etc., is broken by a non-Gossett male's YDNA entering the lineage. It need not have resulted from anything scandalous (e.g., extramarital affair). For example, a Gossett male could have married a widow with young son from her previous marriage. The new Gossett husband could simply have adopted the child -- formally or informally. Another example: A Gossett family might have adopted an orphaned son on the wife's side of the family; this son would carry the Gossett surname thereafter, but not the Gossett YDNA.
If a UPE is invoked as possible explanation for the situation depicted above, it would likely have had to occur on the "yellow" side, because the "blue" side participants have Group-I YDNA -- the most prevalent pattern found thus far among American Gossetts. On the other hand, if a paper-trail descent from Matthias is accepted for all five project participants, a UPE is unlikely to explain the YDNA variant occurring among "yellow" side participants because the markers are shared by at least two different sons of Matthias (b 1736) -- Jacob (b 1770) and Matthias (b 1767). Both Jacob and Matthias, Jr., would have to have been adopted or sired out of wedlock by the same male, and that seems improbable, although not impossible.
A more likely explanation is that the "blue" side participants do not descend from Matthias (b 1736), and that Matthias (b 1736) descends either from a different Gossett imigrant than do the Group-I participants, or else Matthias' YDNA reflects an early UPE in the Group-I lineage -- with this UPE occurring either with the conception of Matthias (b 1736) or earlier.
Our reason for speculating that John Gibson, Charles Warren, and G. Charles might not descend from Matthias (b 1736) is because there were several "John" and "Matthias" Gossetts in the same general area and time-period. This is explored more fully here in genealogical research reported by Eric Talla and Judith Gossett Talla.
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