A segment-ology TIDBIT
Here is an example of walking the ancestor back. I just extended one more generation today, giving four intermediate cousins all in the same line of descent from the CA.
The TG is [14B24] 18-30Mbp about 18cM – [14B24] indicates Chr 14, start in 10-20Mbp area, ahnentafel to CA starts 2-4 – some show this as PP]
The following line of descent is all in VA/WV [the four CAs are bolded]:
Common Ancestor: Sylvester WELCH 1696-1753; 1m 1720 Anne SPENCE: Match KBD at ADNA for 9.9cM is 6C1R
MRCA is son: Sylvester WELCH 1729-1810; m c1752 Jemima CARROLL; Match PDJ at FTDNA for 10.1cM is 5C
Dau: Elizabeth WELCH 1777-1847; m 1797 James FLEMING
MRCA is dau: Sarah FLEMING 1809-1854; m 1827 John H BARTLETT: Match LWA at FTDNA for 16.2cM is 3C
MRCA is son: James V BARTLETT 1836-1920; 1m Elizabeth J NEWLON: Match CK at 23andMe for 54.1cM is 2C1R [this segment overlaps the next TG, too]
Son: Ira S BARTLETT m Blanche O MITCHELL
Son: James V BARTLETT m Betty V BAKER
Son: jvb jr = me!
A Segment-ology TIDBIT
[22F] Segment-ology: Walking the Ancestor Back TIDBIT by Jim Bartlett 20170103