Cyneswith of Castor

Venerable Cyneswith of Castor was a daughter of King Penda of Mercia and the sister of Saint Cyneburga. When her sister died, she succeeded her as abbess of the convent at Castor in Northamptonshire. Saint Tibba, a kinswoman, joined them. She reposed around the year 680, and the relics of the three were enshrined together.

She is a saint of the undivided Church, commemorated on 6 March (new style, Western calendar).