Career
Montresor was made a Lieutenant in the Royal Navy in 1835. Promoted to Captain in 1857, he took command of HMS Calypso and sailed to Esquimalt in August 1858 to deal with American miners causing commotion in the Fraser River area. In 1862 he transferred to the command of HMS Severn before being appointed Commander-in-Chief, East Indies & Cape of Good Hope Station in January 1865.