I seem to remember trying to search for him for you some time ago.I don't know fi this is the right Ralph or not, but found an obit for a wife of a Ralph Muir. As it is from the Montreal Gazetter and her age is close to her being born around same time as your Ralph I thought it might just be his wife. ??
Obituary by Montreal Gazette
Karen Muir MUIR, Karen On April 14, 2010, Mrs. Karen Muir of Edmonton passed away at the age of 65 years. She is survived by her three daughters Kelly, Sylvia (Kevin), Amber (James); five grandsons: Zachary, Kyle, Kevin, Dylan and Noah; one granddaughter Nia as well as two sisters Fay and Char. Karen was predeceased by her husband Ralph Muir. A Funeral Service will be held on Tuesday, April 20, 2010 at 10:00 a.m. at Appel Funeral Homes/Central Memorial Chapel, 10530 - 116 Street with Reverend David Wasyk officiating. Interment to follow at Beechmount Cemetery.
maybe you could contact the cemetery and find out if her husband Ralph is buried there and by that find out if he is the right fellow.