He had two marriages

George Dewey first met his first wife when he was deployed to work at the Portsmouth Navy Yard in Kittery, Maine, in 1866: [4] Susan "Susie" Boardman Goodwin (1844–1872), who was the daughter of New Hampshire's war governor, Ichabod Goodwin, a Republican who outfitted men for the war at his own expense. They wed on October 24, 1867, and had one son, George. Five days after giving birth, on December 28, 1872, Susie passed away.

The long-time widower was handsome and enjoyed being around ladies. He stumbled upon his son in 1893 while taking two women onto a battleship. Dewey responded quickly and identified his son as his younger brother - one of the interesting facts about George Dewey.

Mildred McLean Hazen (1850-1931), the widow of General William Babcock Hazen, and George Dewey got married for a second time on November 9, 1899, in the rectory of St. Paul's Catholic Church in Washington, D.C., upon his triumphant return from the Far East. They were unable to wed inside a Catholic church since Dewey was not a Roman Catholic and neither was Hazen. Some anti-Catholic forces condemned the couple, as well as Dewey's transfer of the $50,000 Washington mansion that the American public had given him through a fundraising effort to his wife.