Sextroh, who lived in Zierikzee, was active as a privateer in the eighteenth century. A highly controversial action of Sextroh involved his capture on 28 October 1782 of the British packetboat the Dolphin. The capture was controversial because of agreements between the Dutch Republic and Great Britain to refrain from attacking such ships. Sextroh received permission despite of this, because the Dutch authorities suspected treason among the Dutch upper circles. The letters from the packetboat provided no evidence, however, and the Dutch government had to apologize to the British government. Later that year Sextroh captured the British East India Merchant the Marianne on 20 November 1782.
