The surname Meighan was first found in County Leitrim (Irish: Liatroim) anciently the western half of the kingdom of Breifne, located in Northeastern Ireland, in Leinster province, Originally, “Ó Miadhacháin, this is the name of at least two distinct septs; it is now equally distributed throughout the four provinces.”
Among the many spelling variations of the surname Meighan that are preserved in archival documents are Meighan, Meehan, Meegin, Meeghen, Meegan, Meakin, Meakins, Mekins, Mehan, Mehen, Mehigan, Mehegan, O’Meighan, O’Meehan and many more…