What is "urith"

Urith \U"rith\, n. The bindings of a hedge. [Obs. or Prov. Eng.]
--Halliwell.

Urith (more properly in Welsh Iwerydd, but also known in Latin as Hieritha and occasionally corrupted to Erth), was a Brythonic maiden from the Westcountry who was martyred, possibly in the early 8th century, and subsequently revered as a saint. The name is still common in the English county of Devon. Her feast day is 8 July.