I am seeking descendants of my great grandfather Alexander P. Allen. He was born in Ireland abt 1839, immigrated with his family (parents may be David Allen and Ann BlacK) to the U.S. abt 1852, married Ellen Harding, served in the Navy aboard the U.S.S. Nyack during the Civil War, raised a family in Glen Cove, Long Island, worked as an engineer (most likely with steam boilers), after his wife died married Julia Breen, died in Brooklyn, New York in 1904, buried in Cypress Hills National Cemetery. Alexander's children were Catherine, Alexander, Edward, John, Ann, William, Frank, Catharine and Jennie. My grandfather is Edward Harding Allen and my father is Edward Joseph Allen. I am Edward Michael Allen.