Just a wee thought on family names going on here.
Frances Watts was the daughter of Isaac and Sarah. The children of Samuel and Frances were Isaac - after his maternal grandfather and Mary - potentially Samuel's paternal grandmother is Mary (John W who married Sophia was son of John W and Mary Bonham). Jaywit asked "So if Sophia died in 1801 when Samuel was just a toddler and John didn't remarry until 1805 I wonder if Samuel went to his mother's family, or to the Warwickshire Wimbush branch?" - Maybe he went to his paternal grandmother?
Isaac then passed the name onto two of his sons (one died in infancy).
First son George - ?
2nd son Sam (not Samuel) - presumably after Isaac's father
3rd son Isaac - after his father and maternal grandfather
4th son John - after his paternal grandfather? (John W and Sophia Short)
5th son Isaac - the first Isaac had died
6th son William - ?
7th son Ernest Fred - ?
1st daughter - Fanny - after Frances
2nd dughter Ann - ?
3rd daughter Emma Sophia - after Isaac's mother and half-sister?
4th daughter Susan Agnes - ?
Mary Wes(t)ley was the daughter of John and Elizabeth. the children of Samuel and Mary were Sophia (paternal grandmother) and John (paternal and maternal grandfathers), as jaywit mentioned.
OK this then gets a bit complicated...
Isaac, son of Isaac and Mary, married Mary Ann Whitehead. Her parents were Emmanuel Whitehead and Ann Facer. Emmanuel was the illegitimate child of Amy Prestage/Prestidge. His baptism was as Emmanuel Whitehead Prestage but he dropped the Prestage at some point before 1818 when he married Ann. (There was an Emanuel Whitehead in the area and I suspect he was the father, if not it's an unusual choice of names.)
Amy's sister, Charlotte, married Thomas Wimbush of Upper Boddington.
In other words Emmanuel was cousins with a number of Wimbushs.
I suspect that the Upper Boddington branch connects with the Byfield branch within a few generations. I think they were probably quite aware of all the other branches and it seems many of them moved around quite a bit.
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Sue - Many thanks for the marriages =)