From Wikipedia, the free encyclopedia Reginald Sheffield was born Matthew Reginald Sheffield Cassan in the St. George's, Hanover Square district of London, to Matthew Sheffield Cassan and Alice Mary Field. He had a brother, Edward Sheffield Cassan, and a sister, Flora Kathleen Sheffield Cassan, who became an actress known as Flora Sheffield. His father was born in Ireland and his mother in England. They were married in London in 1892. Matthew died when Reginald was nine. In 1913 Reginald (bill...