His brother Johan Evertsen decided first to stay ashore, but when Cornelis was killed, he joined as yet the fleet and took command of the vanguard of De Ruyter. He was killed on the first day of the St. James's Day Battle, in August 1666. Both brothers were, after much conflict between the Admiralty and the family over the costs, in 1681 buried in the Abbey of Middelburg, where their shared grave memorial is still to be seen.