William Gustavus Allen was an African-American abolitionist, scholar, and author of "The American Prejudice Against Color: An Authentic Narrative, Showing How Easily the Nation Got into an Uproar" (1853) and "A Short Personal Narrative" (1860)
William married 30 Mar 1853 in New York city to Mary King, Reverend Lyndon King of Fulton, New York.
William and Mary lived in both England and Ireland. He wrote an autobiographical account including of his marriage, which sold well, he and his family eventually fell into obscurity.
William Gustavus Allen 5 May 1888 64 Hazelwood crescent, Kensington, 62 yrs buried Hanwell cemetery.
By Graham Russell Hodges p 50 
Have you taken a DNA test? If so, login to add it. If not, see our friends at Ancestry DNA.