Adelaide of Italy was a 10th-century Holy Roman Empress and Queen of Italy who played a significant role in imperial politics. Born in Orbe Castle to Rudolf II of Burgundy and Bertha of Swabia, she first married Lothair II, the King of Italy. Following his death, she escaped imprisonment by Berengar II to marry Emperor Otto the Great in 951. As a co-bearer of royalty, she wielded substantial political influence, eventually serving as regent for her grandson between 991 and 995.