Teach Sagard

Saggart is mentioned in the Martyrology of Tallaght as having been the site of a monastery founded by St Mosacra, known as Teach Sacra (House of Sacra). This monastery, founded in the 7th century, gives Saggart its name. For many years Saggart was known as Tassagard or Tassagart, and the latter name persists in Tassagart House, and in the names of some housing estates in the area.