Complex sentence: Brundage had once jested that his ambition was to wed a German princess; in June 1973, this came to pass as he married Princess Mariann Charlotte Katharina Stefanie von Reuss, daughter of Heinrich XXXVII, Prince of Reuss-Köstritz.
Split into simpler sentences: Brundage had once jested that his ambition was to wed a German princess. In June 1973, this came to pass when he married Princess Mariann Charlotte Katharina Stefanie von Reuss, daughter of Heinrich XXXVII, Prince of Reuss-Köstritz.