Penallt, a parcel in Llangattock parish, Brecon; on the river Usk, near Crickhowell. Real property, £3,651. Pop., 732. Houses, 134. Llangattock church and Crickhowell workhouse are here; and Troy House, a seat of the Duke of Beaufort, is in the neighbourhood.
Source: The Imperial Gazetteer of England & Wales [Wilson, John M]. A. Fullarton & Co. N. d. c. [1870-72].