William Biddle Atkinson, b. 21 Jun 1832 in Haverford Township, Delaware County, Pennsylvania, d. 23 Nov 1909 in Philadelphia, Philadelphia County, Pennsylvania, son of Isaac Sleeper Atkinson & Mary Reese Biddle. He married Jennie R. Patterson on November 14, 1867 in Philadelphia, Philadelphia County, Pennsylvania.
William Dawkins Atkinson, b. 17 Nov 1818 in Greene County, Georgia, d. 17 Oct 1879 in Blackshear, Pierce County, Georgia, son of Lazarus Atkinson & Mary Ellen Lane.
William Henry Atkinson, b. 23 Jan 1815 in Newtown, Bucks County, Pennsylvania, d. 2 Apr 1891 in Manhattan, New York County, New York, son of David Atkinson & Mary Margerum. He married Martha Cordelia Woodruff on May 17, 1840.