Wikipedia
Glangevlin or The Kingdom of Glan is situated in the northwest of County Cavan, Ireland, at the junction of the R200 and R207 regional roads. It is surrounded by the Cuilcagh Mountains and borders the counties of Leitrim and Fermanagh. A large stone known as 'Maguire's chair' is deposited on the right hand side of the road, roughly 4 miles from Glangevlin village, so-called because it was supposedly the inauguration site of the Maguire clan in medieval times. However by the late medieval period the Kingdom of Glan was taken over by the Magauran's or McGovern's as they are known by today who already had strongholds in Ballymaguaran, Bawnboy and Lissanover. This was after a long violent war between the two clans and still to this day the McGovern's rule the Kingdom of Glan; specifically the Pat Terry's of Tullyminister.
Glangevlin has a strong traditional Irish background and Irish was spoken up until the 1920s, one of the last places in Cavan where this was commonplace.