Barend Cozijn was a son of Mozes Cozijn.
Addition of a visitor of the website
Barend Cozijn was a member of the CPN with the pseudonym Van Beek. In 1937 he was a member of the district administration of this party, possibly in Amsterdam.
Archief Centrale Inlichtingendienst
In addition, a Jokos file (number 51795) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.