Any ancestry sleuths want to have a go?
MIL is a posthumous child and knows very little about her father or any relatives.
Her father was Thomas Grier, died 1941 in the RAF (she was born a few months later).
From what comes up online, he was born 1918 in Glasgow, but I haven’t found a birth record. An online article also says his father was also called Thomas Grier, and that he had been in the Royal Scots Fusiliers in WW2. I haven’t been able to find that either.
MIL thinks his father was some sort of shipwright or boat draughtsman. They definitely had a Glasgow connection. The father must have died by 1940, as we have a news clipping from a Dunoon newspaper about Thomas Grier being awarded DFC, describing him as the son of Mrs Maddocks, so she had evidently re married.
Anyone want to have a go?!