"Adelaide of Italy (931 – 16 December 999 AD) (German: Adelheid von Burgund; Italian: Adelaide di Borgogna), also called Adelaide of Burgundy, was a Holy Roman Empress by ...
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marriage to Holy Roman Emperor Otto the Great; she was crowned as the Holy Roman Empress with him by Pope John XII in Rome on 2 February 962. She was regent of the Holy Roman Empire as the guardian of her grandson in 991-995." - (en.wikipedia.org 31.01.2020)