[2] At his parents' wedding, his father's best man was his good friend James Monroe.

[6] On December 6, 1814, Gerry was appointed and served as a midshipman[7] in the United States Navy.

[8] His brother, James Thompson Gerry (1797–1854), was commander of the USS Albany, a United States Navy war sloop, when it was sunk on September 28, 1854.

[15] Her brother, Peter Goelet, left part of his vast estate to their son Elbridge upon his death in 1879.

[27] Through his son Elbridge, he was the grandfather of Angelica Livingston Gerry (1871–1960),[28] who died unmarried;[29] Mabel Gerry (1872–1930),[28] who married Francis Saxham Elwes Drury (1859–1937);[30] Robert Livingston Gerry, Sr. (1877–1957), who married Cornelia Averell Harriman (1884–1966), the second daughter of railroad executive E. H. Harriman and his wife Mary Williamson Averell;[31] and Peter Goelet Gerry (1879–1957), U.S. Representative and Senator from Rhode Island, who was married to Mathilde Townsend and, later, Edith Stuyvesant Dresser (1873–1958), the widow of George Washington Vanderbilt II (1862–1914).