I was informed that the "assertion that John Allerton (is a son of Isaac 3rd, grandson of Isaac 2nd, and great-grandson of Pilgrim Isaac Allerton and his wife Fear Brewster Allerton has never been proven." Do we Sissons have any proof? It seems that Isaac Allerton (1685-1750) is not named in his father's will. Did he die childless before his father? Has anyone found any Allerton family documents that John Allerton is a son of Isaac Allerton? Thank you for any insight, Laurie H. Sisson