William Isaia Hart was born in Chester County , Pennsylvania, USA in 1820. His father was from Ireland , but I do not know his name . A researcher said his father was Thomas Hart, but I have no proof. I could not find a death certificate for William in Florida 1n 1880 . That was the last time I found him. If I could find a death certificate it would show his father's name. He married Samantha Davis in 1840 in Florida. I know this is not much , but it is all I have. Thank you for any information. Donald and Marlene Hart Blondething@comcast.net