Background
Gannon, Sinclair was born on March 19, 1877 in Columbia, Texas, United States. Son of William Andrew and Nancy Clementine (Robinson) Gannon.
Gannon, Sinclair was born on March 19, 1877 in Columbia, Texas, United States. Son of William Andrew and Nancy Clementine (Robinson) Gannon.
Graduated from the United States Naval Academy, 1900 Naval War College, Newport, 1921.
Hilyer Fulford Gearing), Mary Sinclair (Mistress Ott Lang), commissioned ensign July 1, 1902. Promoted through grades to rear admiral, July 1, 1933. With landing part, from United States Ship Machias, Colon, Colombia, 1901-1902.
Participated Abyssinian Expedition in United States Ship Machias, 1903-1904. With Atlantic Fleet world cruise in United States Ship Glacier Kearsarge and Connecticut, 1907-1909. Flag secretary to commander in chief United States Asiatic Fleet in United States Ship Saratoga, Cincinnati and Rainbow, 1911-1912, and commanding officer United States Ship Elcano on Yangtze River, 1912-1914, during overthrow of Manchu Dynasty.
Commanding officer United States Ship Saranac participated in laying North Sea mine barrage, 1918. Commanding officer United States Ship San Francisco and commander Mine Detachment, 1919-1920. Member War Plans Division, Office of Naval Operations, Joint Army and Navy Planning Committee and Joint Board, 1921-1923.
Assistant chief of staff to commander in chief United States Fleet in United States Ship Seattle, 1923-1925. Commandant of midshipmen United States Naval Academy., 1925-1928. Commanding officer United States Ship New York, 1928-1929.
Chief of staff to commander United States Scouting Fleet, in United States Ship Wyoming, 1929-1930. Commanding officer United States Naval Training Station, San Diego, California, 1930-1933. Commander Aleutian Islands Survey Expedition, 1934, and commander Minecraft, Battle Force, in United States Ship Oglala, 1934-1935.
Commander Destroyers Scouting Force, in United States Ship Raleigh, Dobbin, Whitney and Aylwin, 1935-1936. Commandant 11th Naval District and San Diego Naval Operating Base, 1936-1939. Senior member Pacific Coast section United States Navy Board of Inspection and Survey, 1939-1941.
Retired April 1941.
Member War Plans Division, Office of Naval Operations, Joint Army and Navy Planning Committee and Joint Board, 1921-1923. Member Pacific Coast section United States Navy Board of Inspection and Survey, 1939-1941. Clubs: Army and Navy (Washington).
Married Dell Triplett September 25, 1902. Children: Nancy Stuart (wife Commander.