HIMMINIOG (AMMINIOG), a township, in the parish of LLANRHYSTID, lower division of the hundred of ILAR, county of CARDIGAN, SOUTH WALES, 9 miles (S. S. W.) from Aberystwith, containing 785 inhabitants. This township is situated on the sea-shore, on the road from Aberystwith to Aberagron, and contains the parish church: it forms the lower division of the parish. The river Gwyrai flows through it into Cardigan bay, in which, at flood-tide, here are six fathoms of water, within half a mile of the shore. The fortress called Llanrhjatid, or Dinerth castle, is said to have stood in this division of the parish, but there are no remains of it.