Gerrit Pietersz Sweelink

According to Karel van Mander he was first taught to paint by Jacob Lenartsz, a glasspainter of Amsterdam whose father was a seaman from Zandvoort.

[1] He was such a good student that he was recommended to the painter Cornelis van Haarlem by Jacob Rauwaert.

[1] He was the brother of the Orpheus of Amsterdam, the organist Jan Pieterszoon Sweelinck, whose portrait he later painted.

[1] When Van Mander was writing Sweelink was living back in Amsterdam and still painting.

[1] Sweelink had taught a few good students, including a painter named "Govert" in Amsterdam, and Pieter Lastman in Italy.