"Adolf IX of Berg (also referred to as Adolf VI) (c. 1280 – 3 April 1348) was the eldest son of Henry of Berg, Lord of Windeck and Agnes of the Mark.
In 1308, Adolf succeeded as Count of Berg upon the death of his uncle William I of Berg who had no children. Adolf was an important and loyal supporter of Ludwig IV of Bavaria, helping him since 1314 in the war of succession. As a result of Adolf´s 1312 marriage to Agnes of Cleves, he received the Rhine customs of Duisberg as a dowry and these were confirmed as an imperial fief by Emperor Louis in 1314. He continued the constant feuds between the House of Berg and the Archbishops of Cologne. In 1327/28, he joined Louis on his trip to Rome where he was crowned as Emperor. Adolf received the privilege to mint silver which he did at Wipperfürth. In 1337 Adolf joined the English-German Alliance which caused the start of the Hundred Years´ War." - (en.wikipedia.org 31.01.2020)
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