Llanfair-is-gaer
Llanfair-is-gaer was an ecclesiastical parish in Caernarfon, Gwynedd: the parish church was St Mary's.
The ancient parish of Llanfair-is-gaer comprised the five townships of Bonyrafallen, Botandreg, Brynffynnon, Llanfair Isaf and Portdinorwig.