found: Davies, D. W. From horses to helicopters, 1961.
found: Muni. yr. bk., 1988, p. 1xxiii(Montgomeryshire, former county; after 1974 reorganization, a district in Powys)
found: Webster's new geog. dict., 1984:p. 786 (Montgomeryshire or Montgomery; former county, E Wales; see Powys)
found: GeoNames, algorithmically matched, 2009(civil; 52°35ʹ00ʺN 003°30ʹ00ʺW)
found: GEOnet, 26 March 2020(Montgomeryshire (approved); Montgomery (short, variant); Drefaldwyn (variant); geopolitical entity name: United Kingdom; first-order administrative division name: Powys (English and Welsh); latitude, longitude: DMS: 52° 35ʹ 00ʺ N, 003° 30ʹ 00ʺ W; DD: 52.583333 [N], -3.5 [W]; feature designation: administrative division)
found: Wikipedia, 26 March 2020:Montgomeryshire (Montgomeryshire; redirects from: County of Montgomery, County Montgomery; also known as Maldwyn (Welsh: Sir Drefaldwyn); one of 13 historic counties and a former administrative county of Wales; named after its county town, Montgomery; today constitutes the northern part of the principal area of Powys; was formed from the cantrefi of Y Fyrnwy, Llyswynaf, Ystlyg, Cedewain, and Arwystli, also gained commote of Ceri; medieval kingdom of Powys Wenwynwyn became Lordship of Powys; with Laws in Wales Acts 1535-1542, the marcher lordships were converted into English counties, so Lordship of Paowys became Montgomeryshire, with county town Montgomery (strongest centre of English authority) rather than Welshpool (centre of Welsh authority); 1889-1974, became an administrative county, with assizes and Montgomeryshire County Council seated in Montgomery, but administration continued[?] to be based at Welshpool, regarded as county town prior to the 1889 reforms; local government reforms in 1974 combined the administrative areas of Montgomeryshire, Radnorshire, and Breconshire to form a new administrative county, Powys; Montgomeryshire became a district of Powys, with its administrative headquarters in Newtown; further local government reform in 1996 abolished district councils in Wales, including Montgomeryshire District Council, making Powys a unitary authority; the Montgomeryshire area continued to have an administrative/political function as one of the 3 committee areas used by Powys Council along with the other 2 historic counties (Radnorshire and Breconshire), but these committee areas were abolished in 2018; DMS: 52° 35ʹ 0ʺ N, 003° 30ʹ 0ʺ W; decimal: 52.583333 [N], -3.5 [W]) - https://en.wikipedia.org/w/index.php?title=Montgomeryshire&oldid=915963371
found: Wikidata, 27 March 2020(Montgomeryshire (Q38825); also known as: County of Montgomery; description: historic county of Wales, historic county of the United Kingdom; Spanish: one of 13 historic counties of Gales, on island of Gran Bretaña; inception: 1535, Gregorian) - http://www.wikidata.org/entity/Q38825
found: Wikipedia, 26 March 2020:Powys (a principal area and county, and one of the preserved counties of Wales; named after Kingdom of Powys; covers historic counties of Montgomeryshire and Radnorshire, most of Brecknockshire (Breconshire), and a small part of Denbighshire; 1 April 1974, was created under the Local Government Act 1972, originally had Montgomery, Radnor, and Brecknock as districts within it, based directly on the former administrative counties; 1 April 1996, the districts were abolished, and Powys was reconstituted as a unitary authority with a minor border adjustment in the northeast) - https://en.wikipedia.org/w/index.php?title=Powys&oldid=945668483
found: Wikipedia, 30 October 2017:Powys (a principal area, local-government county, and preserved county in Mid Wales)