Llawhaden Castle or Castell Llanhuadain in the native Welsh tongue is a sprawling ruin of a castle in Pembrokeshire in southwest Wales. It and the surrounding lands were owned by the Bishopric of the Diocese of St David and was the only ecclesiastically-ruled Marcher Lordship. A motte and bailey were built by the first Norman Bishop, Bernard, in 1115 of which only the moat survives.
