In this life, Bruno had saved the Tsar and his family from certain death. In his past life, they were canonized as saints by the Orthodox Church following their tragic murder by the Red Army. But in this life, Nicholas II, his wife, and children were still very much alive and healthy.
Among them, of course, was the Grand Duchess Olga Nicholaievna Romanov, who was one of several monarchs' daughters who in their formative years developed romantic inclinations towards Bruno.
She herself remained unmarried as she entered adulthood, and though she from time to time would read about Bruno's exploits in the Balkans and find herself smiling, she had long since gotten over her misplaced feelings.