I have more info, I just wasn't sure whether to put it all on straight away
He was born on 07.12.1903 in Aitkenhead Cottage, Aitkenhead in the District of Bothwell to Robert Gray (b. 28.11.1871 and d. 21.05.1950) and Margaret Anderson (b. 15.05.1882 and d. 09.01.1952). He was illigitimate, his parents got married 11.03.1904 and he was legitimised on 18.03.1904.
He was still alive in 1952 as he signed his Mother's death Certificate and his address was noted as Drumbathie Road in Airdrie. He was married to "Sadie" but other than that I don't have any other details of her or whether that's even her real name or if it's a shortened version of a name. I have a photo of their wedding which, going by the ages of the people in it, would date it about 1937-1940 ish. I'd love to be able to find a marriage and a death certificate if possible.
Thanks.