Wendreda
Anglo-Saxon nun and saint
Feast: 22 January (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Who they were
Wendreda, also known as Wendreth, was an Anglo-Saxon nun, healer, and saint, perhaps of the 7th century. She was uncertainly reported as a daughter of King Anna of East Anglia, a Christian king, which would make her a sister of Etheldreda, abbess of Ely, Sexburgha, abbess of Minster-in-Sheppey, and Ethelburga, abbess of Faremoutiers, who are all better-known saints, and a half-sister of Sæthryth, also an abbess of Faremoutiers.
Summary from Wikipedia (CC BY-SA 4.0), until this page is written up in full.
The miracles
Limited information available on this saint.
Why that counted as sanctity
Limited information available on this saint.