Article from Lewis' Topographical Survey 1837
ANNAGH, a parish, in the barony of COSTELLO, county of MAYO, and province of CONNAUGHT, on the road from Castlebar to Frenchpark; containing, with the post-town of Ballyhaunis, 6885 inhabitants. This place was chiefly distinguished for a cell of Franciscan friars, thought by some writers said to have been founded by Walter de Burgh for brethren of the order of St. Augustine, as a cell to the abbey of Cong; and to have been the burial-place of Walter, Lord Mac William Oughter, who was interred here in 1440.
The parish comprises 16,325 acres, as applotted under thr tithe act: it is principally under tillage; and there is a sufficient quantity of bog. Logboy is the residence of E. Nolan, Esq., and Hollywell, of J. Bourke, Esq. A weekly market and annual fairs are held at Ballyhaunis, which see. It is a rectory and vicarage, in the diocese of Tuam, and forms part of the union of Kiltullagh: the tithes amount to £194. 19. 11.
The R.C. parish is co-extensive with that of the Established Church; there are chapels at Ballyhaunis and Tulrahan. The old monastery at the former place is still occupied by friars of the order of St. Augustine. There are eight pay schools in the parish, in which are about 390 boys and 230 girls. BALLYHAUNIS, a market-town, in the parish of ANNAGH, barony of COSTELLO, county of Mayo, and province of CONNAUGHT, 9 miles (w.by N.) from Castlerea, and 971/2 miles (W.by N.) from Dublin, on the road from Castlerea to Castlebar; the population is returned with the parish.
A monastery was founded here for friars of the order of St. Augustine, and largely endowed by the Nangle family, who afterwards tool the name of Costello: it subsided till the reign of Jas. I. and at the commencement of the insurrection of 1641 was restored by some friars of the same order. The remains of the ancient buildings consist only of the walls of a church, with two small wings connected with it by arches; on the site of the conventual buildings a modern house has been erected, which is at present occupied by Augustinian friars.
The market is on Tuesday; and fairs are held on June 1st, July 2nd, September 22nd, and October 29th, chiefly for horses and cattle. The town contains a constabulary police station, and has a penny post to Clare and Frenchpark.