 Probably this was a very informal grouping, perhaps meeting to draw nude models, and certainly to exchange artistic views.Corneliszoon also played a role in the failed attempt to make a new charter for the Haarlem Guild of St. Luke in 1630, which tried to raise the status of the artists.His registered pupils were Salomon de Bray, Cornelis Jacobsz Delff, Cornelis Engelsz, and Gerrit Pietersz Sweelink.