Romanov Emperors and their consorts/Empresses:

Peter III (reigned January - June 1762) and his consort and succeeding Empress, Catherine II, the Great (reigned 1762-1796):

Peter III’s temperament became quite unbearable for those who resided in the palace. He would announce trying drills in the morning to male servants who would later join Catherine in her room to sing and dance until late hours. Catherine became pregnant with her second child, Anna,who would only live to be four months old, in 1759. Due to various rumours of Catherine’s promiscuity, Peter was led to believe that he was not the child’s biological father and is known to have proclaimed, “Go to the devil!” when Catherine angrily dismissed his accusation. She thus spent much of this time alone in her own private boudoir to hide away from Peter’s abrasive persona and his disapproved war tactics. (From Catherine the Great’s Wikipedia page.)