Ballaghadeerin or Ballaghaderreen is a place in Co Roscommon. https://en.wikipedia.org/wiki/BallaghaderreenClogher seems to be the location of an old stone fort on the Ballaghaderreen roadhttp://www.loughgaralakesandlegends.ie/north-roscommon/clogher-stone-fortIn the 1901 irish census there were around 4700 inhabitants in the District Electoral Division of Ballaghaderreen Co Roscommon and 281 inhabtants of the townland of Clogher in Co Roscommon