Places, villages, farms etc within Aberysgir parish as shown on the parish map on the CD of Historic Parishes of England and Wales: an Electronic Map of Boundaries before 1850 with a Gazetteer and Metadata [computer file]. (Kain, R.J.P., Oliver, R.R.) (Extracted by John Ball)
- Aberyscir  - Aberyscir, Cusop, Ffinant, Gwern-y-gof, Llwyn-llwyd, Pont-ar-Fran, Ynys-gyfarch, Ynys-y-moch
A Short Guide to Brecon Gaer Roman Fort - "Brecon Gaer (OS national grid reference SO00332966), also known as Y Gaer, is situated in fields belonging to Y Gaer farm near Aberyscir just north of the river Usk...."
A Castle Wales page - Aberyscir castle