Complex sentence: Following his marriage to Joan Dillon, he became managing director of Domaine Clarence Dillon; together the couple acquired Chateau La Mission Haut-Brion, Château Laville Haut-Brion and Château La Tour Haut-Brion.
Split into simpler sentences: Following his marriage to Joan Dillon, he became managing director of Domaine Clarence Dillon. Together, the couple acquired Château La Mission Haut-Brion, Château Laville Haut-Brion and Château La Tour Haut-Brion.