According to the Internet source given below, Ivor [Jack] Ayre was a Canadian pianist and a member of the Dumbells
, which entertained Canadian troops during the First World War. He continued to perform with the Dumbells
when they reformed as a civilian touring group performing songs, skits and musicals across Canada, the United States and the United Kingdom.
A one-off composer, his The Dumbell Rag
(1920). was said to have sold more than ten thousand copies.
||Biography by wikipedia.org.