If your Elizabeth is thru Justice John then that would mean we are cousins. With the surname of Gaston I will assume she is of Samuel and Esther? When one see's birthdates that close and assuming they are given correctly that normally means there are two different mothers. There are a few explanations for that...one could be that the first wife died...usually in child birth. With small children in the household it was almost imperative that the man remarry soon...unless he was well-to-do and had other people in the house to care for them. What are the circumstances that lead you to believe it is Abraham