Jarrell–Quinn Convergence
Observed Phenomenon — Relationship Unresolved
The evidence before the explanation
Three independent lines of investigation have converged on the Jarrell–Quinn question: documentary relationships in eighteenth-century Virginia, an autosomal match between Allen and La Donna, and paternal Y-DNA observations from the Jarrell and Quinn lines.
The research context
Daniel and Mary Jarrell appear in land transactions and neighborhood relationships involving descendants of Darby Quinn. La Donna is a Jarrell descendant and shares 11 cM with Allen. Her nephew Branden Jarrell, her brother’s son, carries the direct Jarrell paternal Y chromosome; an earlier National Geographic Genographic test placed that line at R-L21. Allen’s Quinn paternal line is also beneath R-L21 and has subsequently been resolved much farther downstream to R-FT303674.
Direct path to the evidence
Documents and archival references are separated here from research interpretation.
What can — and cannot — be said
These facts do not prove that Allen and La Donna’s autosomal segment came through Darby Quinn, and shared R-L21 does not establish a genealogical-period paternal relationship. Branden’s planned Big Y test is a direct way to refine one part of the question: where the Jarrell paternal line actually falls below R-L21. The result will be recorded whether it strengthens, weakens, or redirects the proposition.
An observed phenomenon, an undefined hypothesis.