Dutch Captain: Jan Teuniszoon Sluys

Jan Teuniszoon Sluys served the Admiralty of Amsterdam. He seemingly only served from April 1637 until 25 August 1645. He was involved in the entire campaign in 1639 leading up to the Battle of the Downs. He had the honour of taking the first prize in that battle. He had been given the nickname of the Boer Jaap, which we had seen used to describe two men in the Van Nes family. This led to confusion over identities. In 1641, he was with a squadron that took Prins Willem and other dignitaries over to England for the Prince's marriage to Mary Stuart. Captain Sluys transported 24 of the passengers. He apparently died on 25 August 1645. Barent Cramer had hoped to be given command of the Walcheren, but was given the old ship of Captain Toelast, instead. The Walcheren was a ship of 180 lasts, with 28 guns and a crew of 110 men. Captain Sluys took command of the Walcheren from the previous captain Pieter Meeuwszoon Vloo. Sources:

1. Dr. M.G. De Boer, Tromp en de Armada van 1639, 1941.

2. Dr. M.G. De Boer, Tromp en de Duinkerkers, 1949.