Little is known of his early life. Cornelis Cornelisz was born in the village of Uitgeest and later married Trijn Pieters, the daughter of the flour miller who owned "De Krijger" on the Meldijk there.
Cornelis Cornelisz's early life remains largely unknown. He married Trijn Pieters, the daughter of a flour miller who owned a mill called "De Krijger" in Uitgeest.