Charles van Lier was a son of Samuel van Lier and Franciska Adelaar.
After a divorce he married for the second time in 1924. The couple had three children. The family lived in Blaricum. He was an art dealer.
Charles van Lier helped out artists in hiding, for instance by taking care of false identity papers. He worked together with Arondeus. After the latter's arrest, he was picked up on 7 April …