"TULSK, a post-town (formerly an incorporated market-town and parliamentary borongh), in the parish of OGULLA, barony and county of ROSCOMMON, province of CONNAUGHT, 8 miles (N.) from Roscommon, and 79 ¾ (W. N. W.) from Dublin: the population is returned with the parish. O'Conor Roe erected a castle here in 1406, and during the same century a Dominican monastery was founded either by MacDuil or O'Dowell, or by Phelim, son of Phelim Cleary O'Conor, who was interred here in 1448. The castle was for a long time one of the strongest in the province, and was garrisoned by the Earl of Kildare when he led his forces into this province in 1499.