Artificial intelligent assistant

which duke was the son of frederick of lorrain

Frederick II was the duke of Lorraine from 7 April 1206 to his death. He was the son of Frederick I and Ludmilla, daughter of Mieszko III the Old, monarch of Poland from the Piast Dynasty. He entered into a war with his father-in-law, Theobald I of Bar, and was defeated in 1208.

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