Who convened the Synod of Diamper in 1599?

The Synod of Diamper, held in 1599, was convened by Aleixo de Meneses, the archbishop of Goa.1

This council was intended to formally unite the ancient Thomas Christians of the Malabar Coast with the Roman Catholic Church. The synod resulted in the forced Latinization of local traditions and the removal of the jurisdiction of the Assyrian Church of the East over the Indian community, actions that ultimately led to a significant schism among the Thomas Christians by the mid-17th century.12