Ancestor 504-505

Ancestor 504 and 505
Ancestor 504 is an unknown Cobb and Ancestor 505 is his unknown wife:
Neither Ancestor 504 or 505 would have passed along their X-Chromosome to Mic.
To this couple there were two known male descendants:
Jacob Cobb born about 1778 in Georgia? And died about 1861 in Barbour County, Alabama. Since Mic does not descend from Jacob, he would not be an X-Chromsome ancestor either. He married Henrietta McDade 1798. He had at least one son, James Aquilla Cobb born about 1805 Washington County, Georgia.

Joshua Cobb born about 1760 in Georgia? And died before 25 Oct 1835 in Muscogee County, Georgia. This is Mic’s ancestor 252. He would not be an X-Chromosome ancestor, but his wife, if we knew her name would be . She is Ancestor 253.