Edwin married Constance Mabel Scott on 24 Aug 1909 in Queensland, Australia. Constance (daughter of Alfred Scott and Isabella Thistlethwaite) was born on 12 May 1878 in Queensland, Australia; died after 1914. [Group Sheet]

1. Robert Lindsay Colvin Clark was born in 1910 in Queensland, Australia; died in Unknown.
2. Edith Audrey Colvin Clark was born on 2 May 1912 in Queensland, Australia; died in Unknown.
3. Roy Colvin Clark was born on 21 May 1914 in Bundaberg, Queensland, Australia; died after 1944.