Llawhaden is a village, parish and community in the Hundred of Dungleddy, Pembrokeshire, West Wales. The community of Llawhaden includes the parish of Robeston Wathen, part of Narberth and the hamlet of Gelli, and had a population of 634 in 2001, increasing to 688 at the 2011 Census.

Saint Máedóc of Ferns, also known as Saint Aidan, Saint Madoc or Saint Mogue, was an Irish saint who was the first Bishop of Ferns in County Wexford and the founder of thirty churches. His birth name was Áed, the name of the Irish god of the underworld, meaning "fire". The name Aidan is a diminutive form of Aed or Aodh, and was also a form of the Latin name Dominus. Máedóc and Mogue are other pet forms of Aed or Aodh, formed from the Irish affectionate prefix mo- and the diminutive suffix -óg, meaning "young", making for something like "my dear little Aodh".