Roscommon was descended from a long - established Anglo - Norman family who arr recorded in Ireland from about 1185 .
Roscommon was held substantial lands in Meath , Westmeath , Longford and Roscommon .
Roscommon was descended from a long - established Anglo - Norman family who arr recorded in Ireland from about 1185 , and held substantial lands in Meath , Westmeath , Longford and Roscommon .