In 1617, he married Ermgard Rutgers, sister of
Janus Rutgersius, one of Scaliger's favorite pupils. They had two children:
Nicolas (1620), who was to become a famous Latin poet and book collector, and Elizabeth (1623). At the
Synod of Dort (1618-1619), Heinsius was secretary on behalf of the
States General. Afterwards, he paid more attention to theology and worked on the text of the Greek
New Testament for Elzevier's edition (1624, 1633). In these years, he also wrote a large didactic poem,
De contemptu mortis ("On the contempt of death", 1621), which has a Christian-Stoical content. His wife died in 1633, and Heinsius got into a conflict with
Claudius Salmasius, who was appointed as his colleague in 1631. He became more and more lonely and embittered. He stopped lecturing in 1647. He died in
The Hague, aged 74, and was buried in Leiden. He collected some Greek manuscripts, e.g. codex
155. ==See also==