Alexander White

Gough-Calthorpe married Effie Dunsmuir, daughter of Hon. Robert Dunsmuir, of Craigdarroch Castle, Victoria, British Columbia, and his wife, Joanna, daughter of Alexander White, of Kilmarnock, Scotland at St George's, Hanover Square in London in March 1900. They had no children.

http://en.wikipedia.org/wiki/Somerset_Gough-Calthorpe