Having recently re-visited this family I have found the birth registration of another son of Patrick, who was the eldest son of James and Jane.
His name was Martin, born in 1913, brother of Christopher Bernard LYNCH.
Who is believe to be the grandson who was the informant on James death registration.
So this dies tie up with sams mam’s recollections. Certainly Christopher was in 5 Mill Lane in 1941, and in 3 Mill Lane 1944 to 1967.
The significance of Christopher 2nd forename as Bernard, does suggest a family link to the Bernard mentioned in this posting.