Joost Jacobsz Coert married to Baaltje Jacobsdr ….. They had one daughter Neeltje. She lived between 1676 and 1750. She married first Abraham Pietersz Van der Linde. Then she married Meijndert Cornelisz Aleman (he lived from 1690 – 1759). They had one son Joost. He married Christina Hendriksdr Van Dijke.