Ermenilda of Ely was a seventh-century Anglo-Saxon saint who served as an abbess. Born to King Eorcenberht and Saint Seaxburh, she was married to Wulfhere of Mercia. Following the death of her husband, she entered religious life and eventually held leadership roles at both Minster-in-Sheppey and Ely. Her children, Saint Wærburh and Coenred, also followed religious paths. Historical records, including a Kentish charter from 699, confirm her presence and status during this period.