For a year in 1622 he was a member of the local government of Rotterdam, although he did not have citizenship of this city: the cousin of his wife, one of the three burgomasters, made this possible.
I 1622 var han for et år medlem af Rotterdams lokalforvaltning, selvom han ikke havde borgerskab i denne by; det var en af ​​de tre borgmestre, der var kusine til hans kone, som gjorde det muligt.