Koets became a member of the
Haarlem Guild of St. Luke in 1654 as a
vinder. He collaborated with Haarlem still life painters
Pieter Claesz and
Jan Jansz van de Velde. He himself was influenced by
Floris van Dyck and in turn influenced
Floris van Schooten. He became the teacher of his son, the later painter
Andries Koets. He is not to be confused with the later painter
Roelof Koets of Zwolle, who painted mostly portraits. ==References==