What is "ketteler"

Ketteler and also Kettler is the name of a German noble family of Westphalia. Goswin Ketteler zu Assen (c. 1400 – c. 1471) divided the property with his younger brother Röttger around 1440. He built a new house on his part of the ground and called himself since then Kettler Neu Assen. He changed the background of his coats from silver to gold - the so-called golden line. The silver line still spells Ketteler and is called the silver line Ketteler Alt Assen.

• Clemens August Freiherr von Ketteler (22 November 1853 – 20 June 1900) was a German career diplomat. He was killed during the Boxer Rebellion, an event which prompted the Eight-Nation Alliance to declare war on China.
• Wilhelm Emmanuel Freiherr von Ketteler (25 December 1811 – 13 July 1877) was a German theologian and politician who served as Bishop of Mainz. His social teachings became influential during the papacy of Leo XIII and his encyclical Rerum novarum.
• Gotthard Kettler, (also Ketteler, ; 1517, nearby Anröchte, Kreis Soest – 17 May 1587, Mitau) was the last Master of the Livonian Order and the first Duke of Courland and Semigallia.