William Browne Cogswell, b. 22 Sept. 1834 in Oswego, Oswego County, New York, d. 7 Jun 1921 in New York, New York County, New York, son of David Cogswell & Mary Barnes.
William Cogswell, (New Hampshire) (1882)
William Cogswell, b. 1 Apr 1821 in Atkinson, Rockingham County, New Hampshire, d. 15 Aug 1891 in Bradford, Essex County, Massachusetts, son of Joseph Badger Cogswell & Julia Peaslee. He married Sarah Frances Kimball on November 29, 1855 in Bradford, Essex County, Massachusetts.
William Cogswell, b. 23Aug 1838 in Bradford, Essex County, Massachusetts, d. 22 May 1895 in Washington, District of Columbia, son of George Cogswell & Abigail Parker. He married Emma Thorndike Proctor (1st wife) on June 12, 1865 in Bradford, Essex County, Massachusetts. He married Eva Maria Davis (2nd wife) on December 12, 1881 in Salem, Essex County, Massachusetts.