Nigel, many thanks for your help. Marjorie Winifred Garrett does look to be a possibility. She was Philip's 2nd wife and was somewhat younger than he. Her younger sister, Connie md Philip's 2nd son Edward.

Philip was the youngest of the 12 children of James Garrett & Catharine Jane Cowan. James & Catharine are my g-grandparents. Philip and James are bothe buried at St. Lukes however I have not yet found a burial for Catharine. She seems elusive although her name is listed on the same headstone as James & Philip.
Once again, many thanks!