Biographical Information

Full Name: Jocelyn Henry Clive Graham
AKA: Harry J.C. Graham, Harry Graham, and Col. D. Streamer ("pen name")
Birth Year: 1874
Death Year: 1936
Birthplace: England
Married: Dorothy Villiers, 1910
Children: Virginia Thesiger

Was a captain in the Coldstream Guards from which he took his pseudonym, "Col D Streamer".

From the Canadian Archival Information Network:

"Captain Harry J.C. Graham, 1874-1936, was born in England. He was educated at Eton and Sandhurst, and served in the Coldstream Guards. From 1898 to 1901 he was aide-de-camp to Lord Minto, who was Governor-General of Canada from 1989 to 1904. He accompanied Lord Minto on a trip across Canada to the Klondike gold rush in the Yukon, July 19-October 13, 1900. He kept a journal of the trip, which was later presented to Lord and Lady Minto. On his return to Britain he became a journalist and author of popular fiction. In 1910 he married Dorothy Villiers, and they had at least one child, Virginia (Thesiger)."