I have found a reference to a Pearl Ellen Abrams, 1906-1940 who married a McLean, and is buried at Riverview Cemetery, Wallaceburg, Ontario. Not sure if same person. If it is the same person, she was born Oct 25, 1906 in Sombra,Ontario to James Abrams and Ella Calton.

NOTE: I have found Ellen Pearl Abrams marrying Teddie Carlyle Hart on Mar 22, 1923 in Sombra, so maybe Donald was 2nd marriage?