Berengar II (bĕrˈĭng-gər) [key], d. 966, marquis of Ivrea. In 950 he made himself and his son joint kings of Italy, but his great unpopularity and his attempt to force Adelaide, his predecessor's widow, to marry his son, brought the intervention (951) of Otto I of Germany. Berengar swore fealty to Otto in 952. Later he ravaged Italy and intrigued with Pope John XII against Otto, who captured and imprisoned Berengar in 963.
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