Peter McLaren Forin, brother of John Andrew Forin (who had served with the QOR in the North West Rebellion and kept diary), attended the University of Toronto. He graduated in 1891 and then clerked with John Andrew Forin in New Westminster. He was admitted to the bar in British Columbia in 1895.
He was also active in the volunteer militia and served in several companies including: the 15th Battalion Argyle Light Infantry (1884-1885), Queen’s Own Rifles of Canada (1886-1888), 5th Regiment Canadian Artillery (1896) and the 34th Battery C. F. A. (c. 1914).
He returned to Ontario where he was entered on the Solicitors’ Roll in 1908. He died on April 19, 1915.