Mosacra and the nuns
A monk called Mosacra founded a small settlement close to the site of the village sometime in the early 7th century. The name of the place - Teach Sacra, House of Sacra - records him still. After his death it became a nunnery, reportedly housing more than 80 nuns, until the Viking raids of the 9th century disrupted monastic life across Ireland. The Normans arrived later, Latinised the name to Tasagart, and made it an ecclesiastical property of St Patrick's Cathedral, Dublin, by 1207. The monastery ruins survive on private equestrian grounds about a kilometre from the village.