Cornelis Engelen Silvergieter at the Battle of the Downs in 1639

At the Battle of the Downs, Cornelis Engelen Silvergieter was in Tromp's squadron, destined to attack Don Antonio Oquendo's squadron. He had been with the fleet during the campaign. Tromp's journal refers to him as "Cornelis Engelen", but it is clearly Cornelis Engelen Silvergieter. The earliest date that I have seen a reference to him is April 1628, when he was convoying merchantmen off the coast of France (Dr. Graefe, De Kapiteinsjaren van Maerten Harpertszoon Tromp, p.32). We know from other sources that his ship was the Zeekalf (23 guns).