"Berthold II von Katzenelnbogen (fl. 1199–1217) was a German nobleman of the family of the Counts of Katzenelnbogen[a] and a participant in the Fourth Crusade (1202–04), who became lord of Velestino (c.1205–17) and regent of the Kingdom of Thessalonica (c.1217) in Frankish Greece.[b] He was a patron of poets and in politics a Ghibelline.[c]
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