http://automatedgenealogy.com1911/Ontario/London/34 London/page 1
McDonald, Geo, Brother in law, b. april 1883, age 28, single, mail clerk
in the household of
Young, Jms, head, b. Nov 1866, age 44, teacher
Emily, wife, b. April 1873, age 38, Ontario
Carl, son, b. Dec. 1899, age 11
all presbyterian
living at 379 Princess
1911/Ontario/London/30 London, age 17
Douglas, Robert H. (transcribed as Albert H), head, b. Nov 1856, age 54, druggist
Mary, wife, b. May 1870, age 41, Ontario
Murial D., daughter, b. Dec 1890, age 20, USA, imm 1908, bookkeeper
Malcom K., son, b. June 1892, age 18, USA, imm 1908, mechanic
religion, anglican
I think these are your George and Murial
Went back to the 1901 census for London but couldn't find George under Mc/Macdonald
Young, James, A. head, b. Nov 2, 1869, age 31, teacher
Emma M., wife, b. April 17, 1874, age 27
Earl C., son, b. Dec 4, 1897, age 3
same family as in 1911 with birth years out a bit.