Ultan Patrick (Pat) Byrne (1901 - 1959) was a doctor and head of the laboratory staff at Essondale Hospital. This file contains Byrne's entrance, matriculation, and medical education certificates, a newspaper, and gas receipts. It also consists of photographs of medical association conferences as well as photographs of Byrne's spouse, Agnes, and children Beverlea Patricia May (Patsy) and Peter Ultan. The file also includes Byrne's discharge of duty certificate from WWII as well as his photographs of M Class Officers A22 RCAMC Camp Borden, one of which contains annotated names of officers.