Ernst von Ratzeburg explained

Ernst von Ratzeburg or Rassburg (died 5 March 1279) was a member of the Livonian Order. He acted as its Master from 1273 until his death at the Battle of Aizkraukle in 1279,^[1] at which he was one of 71 members of the Order to die.

Sources

• Ritterbrüder im livländischen Zweig des Deutschen Ordens. Köln: Böhlau, 1993. Nr. 695 (lk 524–525).
• Theodor Hirsch, Max Töppen, Ernst Strehlke: Scriptores Rerum Prussicarum: Die Geschichtsquellen der Preussischen Vorzeit bis zum Untergange der Ordensherrschaft, Leipzig 1861, lk. 640

Notes and References

1. Book: Murray . Alan V. . Crusade and Conversion on the Baltic Frontier 1150–1500 . 5 July 2017 . Taylor & Francis . 978-1-351-94715-2 . 239 . en.