John Stewart Dumbreck was born 1st May 1926 married Evelyn Thomson Stevenson on the 7th September 1951 at St Christopher's Church, Glasgow. They had 3 children listed above.

John died on the 7th July 1990 at Victoria Infirmary, Glasgow. Evelyn died 14th April 1996 at Crosshouse Hospital, Kilmarnock.

Their son John Stewart Dumbreck continues the family name.