I have traced my McGehan Line back to Patrick/Peter McGehan. According to census records from Scotland he was born in Londonderry, Ireland abt. 1793 and was married to Isabella Burns in Hamilton Parish Church, Hamilton, Lanarkshire, Scotland 03 Jun 1821. On his death registration his father is listed as Henry. I have found his last name spelled McGihan, McGehan and McGeehan. Where would I start to find his birth? Any suggestions would be welcomed. Thanks.