this is the problem working on a family tree too late!!
Should have asked my aunt whose father in law knew more about Robert re children.
However age 72 close to 71, 2nd wife was Mary Jane, William would be 40 so no longer living with them Mary H seems young but have heard of Laurence (1st marriage) mentioning sister in law Mary.
2nd family don't think related but possible I just don't know - yet!