Just saw this post. The Glenlosh valley comprises of a number of Townlands. Townlands in this general and the surrounding area are Knockaunbawn Poundcartron , Gowlaunlee, Derreen, Bunnaviskaun.
The townland of Derreen is now a wood on the left of the Maam /Leenane road. The population in this area has seen a huge declined over the years with many of the houses now vacant. The local church is Kilmilkin with the priest living in Leenane where church records would have been recorded.
