On January 31, 1571, he married in
Namur Genoveve de Romaignan, daughter of Laurens de Romaignan and Philippotte le Noire. Genoveve died the following year, leaving Nicasius a son: • Laurens de Sille (1572-1637), burgomeister of Arnhem and later treasurer of
Brabant; he and his wife Walburga Everwyn had five children, including: • Nicasius de Sille (1610-c.1674), who emigrated to
New Amsterdam in 1653 and became First Councillor to Governor
Peter Stuyvesant De Sille remarried to Johanna de Trello (also: de Thrello, van Trillo), and had two daughters: • Johanna de Sille, who married Sir Daniel van Hofdijck, Lord of Middelharnis • Clara de Sille He died in
Amsterdam on August 22, 1600, and was buried there at the
Oude Kerk. ==References==