Everilda was a 7th-century Anglo-Saxon nun who established a religious community in Yorkshire. According to the York Breviary, she belonged to the nobility of Wessex and converted to Christianity in 635 alongside King Cynegils under the guidance of Saint Birinus. Seeking a religious life, she left her home and was later joined by Bega and Wuldreda. These women were made nuns by Saint Wilfrid at a location known as the Bishop's Dwelling, which is identified with the modern site of Everingham.