 Majority of christians in the state hail from the Paravar, Mukkuvar, Udayar (caste), Nadar, and Adi Dravidar.The mass conversion of Paravars date back to the Portuguese era and the conflict over the Pearl Fishery Coast between the Paravars and arabs in the 15th century A.D.The Paravars converted 'en masse' to Christianity and became the subjects of the Portuguese king.The Nadar conversion to Christianity dates back to the British Colonial Era in the 18th-century.