My grandmother's name is Cora Alice Henson, probably a sister to the Mary Henson you speak of. Her mother was Sara Coffee and her father's name was Jerry Henson. The mother- inlaw of Cora Henson was Elizabeth Ann Light. b. Nov. 01, 1835. Elizabeth's father was William R. Light and her mother's name was Ann(a) Mercer. I am not sure of a link there to You (Lewis D. Light).