Information of the family and Mary's siblings (Maes, Godfrey and Martha) was taken from the estate of Henry Jr's son James and the 3 siblings proved by this estate. Godfrey also had dealings with these siblings.
Pendleton's son Levingston named a daughter Martha Billiam Isbell. It seems probable that Levingston would have named his daughter for his aunt.
There is an Isaiah Moody Isbell who must be related, but how?