Dutch Captain: Ysbrandt de Vries

Ysbrandt de Vries served the Admiralty of Amsterdam. In 1658, he commanded the ship Harderin (34 guns) in De Ruyter's fleet that was sent to the coast of Portugal in June 1658. In 1659, he commanded the Gouda (40 guns) in De Ruyter's fleet that was sent to the Sound. He fought in the Battle of Lowestoft in 1665, where he commanded the Doesburg (48 guns). He was assigned to Egbert Meeuwssen Kortenaer's squadron. In August 1665, he was in De Ruyter's fleet. In May 1667, he commanded the Stavoren (46 guns) in the Raid on Chatham. Sources:

1. Gerard Brandt, Het Leven en Bedryf van den Heere Michiel De Ruiter, 1687.
2. Frank Fox, A Distant Storm: the Four Days' Battle of 1666, 1996.