Complex sentence: He married three times with ladies of noble birth: 2nd with Claire Rockox, making him brother-in-law to Lancelot II of Ursel and uncle of Nicolaas II Rockox and Jacobus Dassa, all mayors of Antwerp.
Split into simpler sentences: He married three times with ladies of noble birth: 2nd with Claire Rockox. He became the uncle of Nicolaas II Rockox and Jacobus Dassa, all mayors of Antwerp.