Sonia Evelyn Drew Cornwall (née Cowan, 1919 – 2006) was a Canadian painter and rancher.

[1] Cornwall was born in Kamloops in 1919, the daughter of Charles and Vivian Cowan.

[2] Cornwall's mother, Vivian, had artistic leanings studying at the Banff School of Fine Arts and making friends with A.Y.

[3] The Onward Ranch was a destination for a variety of Canadian artists Including A.Y.

[1] In 1946, at the age of 27 Cornwall enrolled at the Provincial Institute of Technology in Calgary, but dropped out after three months.