In 1870-72, John Marius Wilson's Imperial Gazetteer of England and Wales described Llansilin like this:
LLANSILIN, a township, a parish, and a sub-district in Oswestry district; the township and most of the parish electorally in Denbigh, the rest of the parish and the sub-district electorally in Salop. The township lies on the river Cynlleth, adjacent to the boundary with Salop, 3½ miles W of Offa's dyke, and 6 WSW of Oswestry r. station; and has a post office† under Oswestry, and fairs on 10 July, and 21 Sept. The parish contains also the townships of Bodlith, Estynallan, Lledrode, Lloran, Moelfre, Priddbwll, Isfoel-Rhinlas, UchfoelRhinlas, and Sychart, in Denbigh; and the township of Soughton or Sychtyn, in Salop. ...
Acres of the Denbigh portion, 11,285. Real property, £11,588. Pop., 1,795. Houses, 341. Acres of the Salop portion, 1,446. Real property, £1,607. Pop., 207. Houses, 46. The property is much subdivided. The manor belonged to Einion Evell, from whom several families in this neighbourhood have descended. Glascoed is the seat of the Wynns. Sychart belonged to Owen Glendower; PlâsNewydd, to the Myddletons; and Penybont, to the Maurices. The living is a vicarage in the diocese of St. Asaph. Value, £307.* Patron, the Bishop of St. Asaph. The church is dedicated to St. Silin; is in good condition; acquired a fine stained window in 1866; and contains monuments of the Maurices, the Wynns, and others. The rectory of Rliydycroesau is a separate benefice. There are an Independent chapel, a slightly endowed school, and charities £16.The sub-district contains also two other parishes. Acres, 22,978. Pop., 4,128. Houses, 831.
A Vision of Britain through Time includes a large library of local statistics for administrative units. For the best overall sense of how the area containing Llansilin has changed, please see our redistricted information for the modern district of Powys. More detailed statistical data are available under Units and statistics, which includes both administrative units covering Llansilin and units named after it.
GB Historical GIS / University of Portsmouth, History of Llansilin, in Powys and Denbighshire | Map and description, A Vision of Britain through Time.
Date accessed: 11th February 2016
Click here for more detailed advice on finding places within A Vision of Britain through Time, and maybe some references to other places called "Llansilin".