Family Search have an interactive map called "England and Wales Jurisdictions 1851" showing parish (and other) boundaries with optional background maps such as Ordnance Survey. There is also a Search facility, do read the guidance notes to get maximum benefit from this useful resource. See here for further background information to assist in the interpretation of this data
You can see pictures of Llanafan Fechan which are provided by:
You can see the
administrative areas in which Llanafan Fechan has been placed at times in the past. Select one to see a link to a map of that particular area.
The parish of Llanafan Fechan. 1840. Evan Jones Griffiths, Llandeilo Fawr, surveyor. Apportioned by Commissioners Blamire and Buller, because more than six months had lapsed. Second class map. Voluntary agreement. Commutation dated 20.11.1840. Shows woods, plantations and ownerships (tithable parts only). 2,283 acres commuted. Apportionment by holding. Land use details and field-names given in apportionment schedule. Tithe rent charge £115 (£38.6.8d Vicar; £76.13.4d Chanter and Chapter of St David's Cathedral).
You can see maps centred on OS grid reference SN972504 (Lat/Lon: 52.142294, -3.503621), Llanafan Fechan which are provided by: