Name and birth information from Micheline Champagne.

Ontario, Canada Births, Middlesex County
Mary Jane Simpson, born June 22 1905, father Isaac J Simpson, mother’s maiden name Mary J. Stewert, father is a farmer residence Lot 4, consession 9?

In the 1911 Canadian Census
Mosa Township, Middlesex County, Ontario
Head Isaac J. Simpson, born December 1858, age 52, born Ontario, farmer
Wife Mary J. Simpson, born January 1869, age 42, born Ontario
Daughter Sarah A. Simpson, born September 1894, age 16, born Ontario
Daughter Catherine Simpson, born July 1899, age 11, born Ontario
Son William J. Simpson, born December 1900, age 10, born Ontario
Son John D. Simpson, born November 1903, age 5, born Ontario
Daughter Mary J. Simpson, born January 1905, age 5, born Ontario
Daughter Margaret Simpson, born February 1908, age 3,born Ontario
Daughter Elizabeth E. Simpson, born May 1910, age 1, born Ontario
Sister Mary M Simpson, single, born April 1854, age 57, born Ontario

Ontario, Canada Marriages
William Andrew Coulthard, age 26, bachelor, of Elfrid Township, Middlesex County, Ontario, farmer, father Daniel Andrew Coulthard, mother Ella May Irving and
Mary Jane Simpson, age 21, spinster, of Mosa Township, father Isaac Simpson, mother Mary Stewart
Married August 13, 1927
WitnessesBlanche Pearson of Chicago Illinois and William James Simpson of Glencoe, Ontario in Mosa Township

Ontario death
Mary Coulthard died April 2 1941 at Victoria Hospital, London, Middlesex County, Ontario
Born June 22 1905, Ontario
Houseiwfe
Husband William Coulthard
Ftaher Isaac J. Simpson, born Ontario
Mother’s maiden name Mary Jane Stewart, born Ontario
Informant J.D. Simpson of Glencoe, brother
Buried April 4, 1941 Oakland Cemetery