Only Cordelia.
The Sydney Morning Herald - Saturday 9 April 1887 p.1
Marriages
McCALLUM - MARTIN.-March 30, 1887, at the residence of the bride's parents, by the Rev. C. Olden, Rev. W. McCallum, only son of the late George McCallum, of Ayr, Scotland, to Cordelia Annie, second daughter of Thomas Martin, Lyndhurst, Glebe.
Don't know if the name of the residence is from MARTIN or McCALLUM side
The Sydney Morning Herald - Thursday 30 July 1931 p.8
DEATHS
McCALLUM.-July 29, 1931, at her residence Scotia, White-st., Strathfield, Annie, beloved wife of Rev. W. McCallum, aged 68 years. (Suddenly).
Sometimes that's a clue to a place in a county in UK.