is the mutated form of the Welsh , meaning "big" or "great". The title distinguishes the community from the nearby Llanafan Fechan ("Little Llanafan"), although that village is now more often known as "Llanfechan".
is the altered form of the Welsh , meaning "large" or "enormous". The title differentiates the community from the nearby Llanafan Fechan ("Little Llanafan"), although that village is now more commonly known as "Llanfechan".