John Patrick Hannon was born March, 1854 in Ohio. His wife Maria McQuoid was 9 years his junior. John Patrick, Mary Margaret's Grand Father, was the second of James Henry Hannon and Ellen (Coleman) Hannon's 6 sons and 4 daughters.
James Henry Hannon was born May 8, 1817 in Ireland, he immigrated to the U.S. in 1847. He and Ellen married around 1850. James Henry died May 20, 1904 in Summitville, Madison Co. IN. Ellen Coleman, only daughter of James Coleman's 2 children, was born around 1831 in Ireland. She and James Henry wed in America. Ellen died February 9, 1903 in Summitville, IN. She was 72. Ellen is buried at St. Mary's Cemetery, Anderson, Madison Co. IN.
James Henry Hannon, (Margaret Hannon's Grandfather,) had one older brother Patrick and one younger brother, Michael Hannon. They were the children of Michael Hannon Sr. and Martha Hopkins. Michael Sr. was born in Ireland, his wife was born in Wales.