When Adelard Guay was born on 28 October 1876, in Sainte-Agnès, Charlevoix-Est, Quebec, Canada, his father, Joseph Guay, was 27 and his mother, Marie Anne Gauthier Or Larouche, was 26. He married Emelina Tremblay on 20 January 1903, in Sainte-Agnès, Charlevoix-Est, Quebec, Canada. They were the parents of at least 1 daughter. He lived in Charlevoix-Ouest, Quebec, Canada for about 10 years and Chicoutimi, Quebec, Canada in 1911. He died on 7 September 1958, in Essondale, Coquitlam, Metro Vancouver, British Columbia, Canada, at the age of 81, and was buried in Metro Vancouver, British Columbia, Canada.