High Quality Content by WIKIPEDIA articles! St Llibio`s Church, Llanllibio is a demolished church in Anglesey, north Wales. Founded by Llibio in the sixth century, the church served a small community of bondmen as a chapel of ease. The population of Llanllibio declined substantially during the Middle Ages as a result of the Black Death and changes in farming practice, amongst other factors, and the community that the church served effectively disappeared. As a result St Llibio`s closed in the seventeenth century; the remaining worshippers moved to another local church.