Jacob Barker, b. 17 Dec 1779 in Swan Island, Kennebec County, Maine, d. 26 Dec 1871 in Philadelphia, Philadelphia County, Pennsylvania, son of Robert Barker & Sarah Folger (2nd wife). He married Elizabeth Hazard on August 27, 1801 in New Bedford, Bristol County, Massachusetts.
James Madison Barker, b. 23 Oct 1839 in Pittsfield, Berkshire County, Massachusetts, d. 3 Oct 1905 in Boston, Suffolk County, Massachusetts, son of John Vanderburgh Barker & Sarah Apthorp. He married Helena Whiting on September 21, 1864 in Pittsfield, Berkshire County, Massachusetts.
John Anthony Barker, b. 1 May 1842 in Landaff, Grafton County, New Hampshire, d. 22 Sept. 1907 in Manchester, Hillsborough County, New Hampshire, son of Samuel Barker & Sarah E. Jackson. He married Maria Pattie Towne on December 4, 1869 in Manchester, Hillsborough County, New Hampshire.
John Barker, b. Nov 1819 in New York City, New York, d. 31, May 1890 in Brooklyn, Kings County, New York. He married May Ann Dodd.
John Francis Barker, b. 16 Dec 1839 in Needham, Norfolk County, Massachusetts, d. 20 Nov 1919 in Springfield, Hampden County, Massachusetts, son of Albemarle Barker & Abigail A. Francis. He married Laura Pierce (1st wife) on March 12, 1859 in New Hampshire. He married Jennie F. Pierce (2nd wife) on November 27, 1888 in Jersey City, Hudson County, New Jersey.
John William Barker, b. 15 Apr 1819 in Pike County, Ohio, d. 8 Jan 1889 in Farmers, Fulton County, Illinois, son of John William Barker & Eleanor Rutledge (2nd wife). He married Rachel Harris (1st wife) in 1841 in Fulton County, Illinois. He married Eliza Skellerin Brand (2nd wife) on April 9, 1848 in Fulton County, Illinois.