Buttevant is a medieval market town in County Cork, Ireland.

The de Barry family is a noble Cambro-Norman family which held extensive land holdings in Wales and Ireland. The founder of the de Barra family was a Norman Knight, Odo, who assisted in the Norman Conquest of England and south east Wales during the 11th century. As a reward for his military services, Odo was granted estates in Pembrokeshire and around Barry, Wales, including Barry Island just off the coast.