John was the brother of my great-great-great grandfather Robert Clendening. They were both born in Ireland, and came to the US with their mother Ann and several sisters (not sure if it was 2 or 3 sisters) sometime before 1833. They came before the Potato Famine migration, and seemed to arrive with money for land.
John married Cassandra Tracey, and they moved their family to Kansas just before the Civil War. They eventully divorced, and John lived out his days in Kansas. A newspaper recorded his drowning in 1886 while fishing along Duck Creek in Coffey County, KS.