Rollo Mainguy

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Edmond Rollo Mainguy
Rollo Mainguy.jpeg
Commander E.R. Mainguy, Commanding Officer, HMCS Ottawa, off Botwood, Newfoundland, 22 June 1940.
Born(1901-05-01)May 1, 1901
Victoria, British Columbia
DiedApril 29, 1979(1979-04-29) (aged 77)
Nanaimo, British Columbia
Allegiance Canada
Service/branch Royal Canadian Navy
Years of service1915–1956
Commands heldChief of the Naval Staff
HMCS Assiniboine
HMCS Ottawa
HMCS Uganda
Battles/warsSecond World War
AwardsOfficer of the Order of the British Empire
Canadian Forces Decoration

Vice-Admiral Edmond Rollo Mainguy, OBE, CD (11 May 1901 – 29 April 1979) was a Canadian Naval officer.

Military career[edit]

Mainguy was born in Victoria, British Columbia in 1901 and attended the Royal Naval College of Canada in 1915 during the First World War.[1]

With the start of the Second World War he took command of HMCS Assiniboine and then HMCS Ottawa before being promoted to Captain and taking overall command of Royal Canadian Navy (RCN) destroyers in Halifax in 1941. In 1942 he was appointed acting Commodore and took command of RCN destroyers in Newfoundland, quickly followed by an appointment to Ottawa as Chief of Naval Personnel.[1] He returned to active duty as the commanding officer of HMCS Uganda in 1944. As a part of British Pacific Fleet Uganda took part in the Okinawa campaign.[1][2]

In the post-war years Mainguy was appointed Flag Officer Pacific Coast in 1946, Flag Officer Atlantic Coast in 1948, and was the head of the commission that investigated the RCN insubordination incidents of 1949 before becoming Chief of the Naval Staff in 1951.[1]

He retired from the Royal Canadian Navy in 1956 as a Vice-Admiral.[1] In retirement he was president of Great Lakes Shipping until 1965.[3] He died in 1979.[3]


Mainguy married Maraquita Nichol, daughter of Walter Cameron Nichol, in 1927. Their son, Daniel Mainguy, later also reached the rank of Vice-Admiral, serving as Vice Chief of the Defence Staff from 1983 to 1985.


External links[edit]

Military offices
Preceded by
Harold Grant
Chief of the Naval Staff
Succeeded by
Harry DeWolf