I don't know, probably his wife. The one who reported the death, their name would be on the death certificate, which I will not buy at present. The birth year will be around 1942 as it is assumed he was 21 when marrying in 1963. He might have been younger as 21 was the legal age of marriage without consent. Their child was born 3 months later. There was some urgency and a need to marry.
I do not need to take this thread any further. It will not find him, so i need to trace other members of the family and may stumble across him.