 Sebastian de Maya, who in 1640 was imprisoned at Madura in company with de Nobili, while Father Martins remained at Trichy.In 1640 a new departure was made by Father Balthasar da Costa who began working specially for the lower castes.The success was such that in 1644 the total number of converts in the Madura, Trichy, and Satiamangalam districts rose to 3500, that is to say 1000 of the higher castes, and 2500 pariahs.