A small news item from the April 8 1940 edition of the Toronto Daily Star:
I couldn’t find anything about the song on the Internet, but the Government of Canada website has a record of the burial site for Mrs. Tyas’s son. He is interred in the Vimy Memorial Cemetery in Pas de Calais, France.
From the “Ode of Remembrance”:
They shall grow not old, as we that are left grow old:
Age shall not weary them, nor the years condemn.
At the going down of the sun and in the morning,
We will remember them.