Ludolph of Ratzeburg was a

Premonstratensian The Order of Canons Regular of Prémontré (), also known as the Premonstratensians, the Norbertines and, in Britain and Ireland, as the White Canons (from the colour of their habit), is a religious order of canons regular of the Catholic Church ...

Religious life

In 1236, Ludolph was appointed to the see of the newly formed Prince-Bishopric of Ratzeburg. Ludolph came into conflict with Duke Albert I of Saxony and was duly imprisoned, where he was badly beaten, and later sent into exile. In exile Ludolph was taken in by Duke John of Mecklenburg, but died soon after in 1250 because of the abuse he received in prison.

Legacy

One legend tells of a soldier who was wounded when an arrowhead was embedded in his head. The soldier, who was in great pain, invoked the intercession of St. Ludolph, and he was soon able to remove the arrow and was healed.St. Ludolf
Catholic Online

References

German Roman Catholic saints 13th-century Christian saints 1250 deaths 13th-century German Roman Catholic bishops Premonstratensians Roman Catholic Prince-Bishops of Ratzeburg Year of birth unknown {{Germany-RC-bishop-stub