Only have a note of ancestry. No proper obit. Presume he married approx 1941 to as you say 1946, possilbly in new York. Husband has found a john t campbell in NY phone book 21 B'way Ter LOrain 9-3496 think he said 1948. not sure if its him. His first wife. Elizabeth C. ? Must then have died between 1946 and 1952 as he remarried Nora ann mcdermott a divorcee ( née McIntyre) in 1953. As to children unknown.
Death John Campbell. SSN. 053-24-4359 last residence Pasadena Los Angeles California USA. Died Feb 1978. DOB. 28 Feb 1914. This was his birthday so felt it was him. Don't think any children 2nd marriage as Nora was 50. Don't know how to get certs from USA even through ancestry. Thank you for taking the time to look at this. It is much appreciated