On Tue, 18 Aug 2020 11:24:32 -0000 (UTC), Joe Makowiec
<mako...@invalid.invalid> wrote:
>The issue then becomes finding the path to the common ancestors. In
>the relationship chart, Roots Magic 7 (RM) only does the shortest
>route. I just tried a couple of cases - me to my 9th and 10th g
>grandfather; me to someone with whom I have at least 7 cousin
>relationships, the shortest of which is 6th cousin thrice removed.
>That was the only path RM returned on a chart.
Yes, RMs charting shows only one path, presumably the shortest.I use
the Relationship Calculator results to calculate the Coefficient of
Relationship, because the value of that coefficient is directly
related to the theoretical Autosomal DNA results for the two
individuals, and easily explains Autosomal DNA values much higher than
would ordinarily be expected for the relationship shown by the
"shortest path". Here's the results for me and a distant cousin:
Thomas Weldon Hoffpauir and Charles Richard "Charlie" Hoffpauir
1. Fourth cousin once removed (common ancestor: Thomas Hoffpauir &
Marie Charlotte Périllard)
2. Fourth cousin (common ancestor: Thomas Hoffpauir & Marie Charlotte
Périllard)
3. Fourth cousin once removed (common ancestor: Edward Forman II &
Nancy Anna Perry)
4. Fourth cousin once removed (common ancestor: George Faulk &
Adelaide Hargrave)
5. Fourth cousin twice removed (common ancestor: John Perry & Penelope
Perry)
6. Fourth cousin twice removed (common ancestor: Luke Faulk & Celeste
Reples)
7. Fourth cousin (common ancestor: Joseph Ephraim Forman & Mary
Elizabeth Brown)
8. Fourth cousin (common ancestor: Pierre Stutes & Amelia Hoffpauir)
9. Fifth cousin (common ancestor: Edward Forman)
10. Fifth cousin once removed (common ancestor: Edward Forman)
11. Fourth cousin once removed (common ancestor: Thomas Hoffpauir &
Marie Charlotte Périllard)
Notice that the common ancestor pair of Thomas and Marie Charlotte
appear three times in the results, indicating three different ways
they are Thomas' and my common ancestors.
The obvious limitation of this kind of calculation is that for
accuracy, I need to have "all" of both Thomas Weldon and my ancestors
in my database.... so at best my calculation produces an
approximation.