Trịnh–Nguyễn War
Vietnamese slaves were taken by the Dutch East India Company to Taiwan when it was under Dutch rule, and the Dutch on Taiwan conducted trade with Vietnam. The Dutch had Pampang and Quinamese slaves on their colony in Taiwan, and in 1643 offered rewards to aboriginal allies who would recapture the slaves for them when they ran away. Eighteen Quinamese and Javanese slaves were involved in a Dutch attack against the Tammalaccouw aboriginals, along with 110 Chinese and 225 troops under Governor Traudenius on 11 January 1642. Seven Quinnamese and three Javanese were involved in a gold hunting expedition along with 200 Chinese and 218 troops under Serior Merchant Cornelis Caesar from November 1645 to January 1646. ("Quinam" was the Dutch name for the Vietnamese Nguyen lord-ruled Cochinchina.) The Dutch sided with the Trịnh lords of Tonkin (Northern Vietnam) against the Nguyen lords of Quinam during the Trịnh–Nguyễn War and were therefore hostile to Quinam.