Writing of agriculture and manufacturing in County Offaly in 1801, Sir Charles Coote noted that the linen industry then thrived, with several local landowners ‘who keep looms employed, but do not bleach. Mr Holmes of Prospect and Mr Armstrong of Belview are the most extensive manufacturers, and both have large greens, but they only bleach their own linen, their [sic] being bleach yards for public accommodation.’ Almost twenty years later Peter Besnard, Inspector-General for Trade and Manufacture of Linen and Hemp in Ireland, produced a report in which he commented on Offaly: ‘The Manufacturing and Bleaching branches of the Linen Business are carried on in this county as usual, particularly in the neighbourhood of Clara and Charlestown; in the latter place, a new Linen Hall has been built by Andrew Armstong Esq. of Belview, whose family have long been supporters and encouragers of the Linen Trade. Mr Armstrong has built this Hall at his own expense, and likewise gives a premium for the best Web sold in it; and I cannot avoid remarking, that wherever premiums have been established, and judiciously applied, they have been productive of much benefit.’

The Armstrong family appears to have settled in this part of the country in the 18th century, one John Armstrong (born 1748) marrying Jane Holmes, whose family lived nearby in a house called Prospect (still standing). He married a second time and had a son Andrew Armstrong, the man mentioned by both Sir Charles Coote and Peter Besnard as being active in the linen industry. A large range of now-derelict buildings on ground below Belview testify to the one-time importance of this business, in the 18th and early 19th centuries by far the most commercially viable in Ireland. From the early 1700s onwards Irish linen was imported duty free to England and to the American colonies, so that eventually this one product accounted for around fifty per cent of Ireland’s total exports. It is understandable that so many entrepreneurial spirits became involved in the business and, if they managed their concern sufficiently well, grew rich, as did the Armstrongs. As was so often the case, they gradually climbed the social scale, moving away from the commercial class to become landed gentry. John Herbert Armstrong, for example, who inherited Belview in the mid-19th century , joined the army and served as a major in the Royal Tyrone Fusiliers. He further cemented his gentry status by marrying Eliza Catherine Lowry whose family, related to the Earls of Belmore, lived at Pomeroy House, County Tyrone. Their son in turn married Emily Theodosia Blacker-Douglas whose family were large landowners (with over 8,000 acres in County Kerry) and lived in Elm Park, outside Armagh. However, after selling their estate in 1912 under the Irish Land Act, the Armstrongs left Belview, which was subsequently leased to a variety of tenants.

Located on the border of Counties Offaly and Westmeath, Belview is a substantial house, the front portion of which dates from the second half of the 18th century. To the rear is an older L-shaped building which looks to have been adapted into a service wing when the newer section was added. The latter featured the usual layout of the period, with a drawing room, dining room and morning room/office opening off a central entrance hall on the ground floor: traces of neo-classical plasterwork survive in some of these spaces. Outside the east-facing façade is of five bays, with a Venetian window on the first floor. Below a short flight of stone steps led to a tripartite limestone doorcase with engaged Doric columns and an open pediment. The house testifies to the Armstrongs’ wish to identify themselves with the local gentry, as well as to the wealth that could be accumulated through the linen trade. A folly built in the form of a monastic round tower by Andrew Armstrong in 1817 and now buried in the nearby woodland, likewise provides evidence of the family’s social ambitions. The house was abandoned some decades ago and is now a roofless ruin.