Name and birth year information from Micheline Champagne.
Known as Sadie

In the 1901 Canadian Census Mosa Township, Middlesex county, Ontario.
Head Isaac J. Simpson, born December 2, 1858, age 42, born Ontario, Canadian, Methodist, farmer, employer working on his own account.
Wife Mary J. Simpson, born January 5, 1869, age 32, born Ontario, Scotch origin, Canadian, Methodist.
Daughter Sarah A. Simpson, born September 18, 1894, age 6, born Ontario, Canadian, Methodist, 5 months in school in year.
Daughter Cathleen Simpson, born July 1, 1899, age 1, born Ontario.
Son William J. Simpson, born November 17, 1900, age 4 months, born Ontario.
The next family listed in Isaac’s parents.

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