Praemonstratensian canon of the cathedral of Ratzeburg (modern Landkreis Herzogtum Lauenburg), Schleswig-Holstein, Germany. Priest. Noted preacher. Bishop of Ratzeburg in 1236. Imprisoned, severely beaten and exiled by Duke Albert Urso of Lauenburg, Saxony for defending the cathedra and preventing the Duke from confiscating its property. He was taken in by Duke John of Mecklenburg, but his injuries were so severe that he did not survive long. Martyr.
- 29 March 1255 in Wismar, Holstein, Germany from injuries received in prison
- buried in the cathedral of Ratzeburg, Schleswig-Holstein, Germany
- some relics at the Saint Johann Premonstratensian abbey in Duisburg-Hamborn, Nordrhein-Westfalen, Germany
- “Saint Ludolf of Ratzeburg“. CatholicSaints.Info. 29 March 2017. Web. 29 April 2017. <>