 He was admitted to the company due to his Barbados trading connections, through the person of Samuel Swynock, one of the Wardens of the Painter-Stainers.Swynock had been close to Antonio Fernandez Carvajal, one of the Sephardic merchants allied to Oliver Cromwell and the Roundheads.Indeed, Carvajal founded the Creechuch Lane Synagogue where Sampson Gideon's parents were married by Haham Aylion on 26 December 1693.