Elaine, the date of birth for Fred Walker came from Fred Walkers daughter.
Patricia did mention about another child that Fred Walker had with his first wife a daughter named Irene Walker born in Rotherham, born in 1931.
Patricia mentioned that Irene was possible placed with an Uncle Percy (Percival) This Percival is on the 1911 census.
When Patricia talked with me today she happened to mention a lot of the family records and paper work were misplaced when another sister Barbara went to a solicitor, just before she died
That's as much information I have
Thanks Barry