This is what we know:
Married Dorothy Hill Nicholls, Cheshire, 1941.
Twin sons born Flintshire, 1947
3rd son born Scotland, 1950
Richard passed, age 68, in 1985, Dunoon, Scotland, MMN, McKenzie
Unable to find a birth for him or on 1921 census or 1939 register.
Could he have changed his name or have been adopted?