Conversion
5 events, 1820 to 2002.
1820
Rhenius begins CMS mission in Tirunelveli
Church Mission Society missionary C. T. E. Rhenius arrived in Tirunelveli and built a large Protestant mission based at Palayamkottai.

1838
Death of missionary C. T. E. Rhenius at Palayamkottai
C. T. E. Rhenius, the missionary known as the Apostle of Tirunelveli, died at Palayamkottai.

1898
Iyothee Thass founds the Sakya Buddhist Society
After embracing Buddhism in Ceylon, Iyothee Thass founded the Sakya Buddhist Society in Madras, launching a Tamil Buddhist revival among Dalits.
1981
Meenakshipuram mass conversion
Several hundred Dalits in Meenakshipuram village in Tirunelveli district converted from Hinduism to Islam, citing caste discrimination.
2002
Tamil Nadu anti-conversion law
The AIADMK government introduced a law against forcible religious conversion, which was withdrawn after the 2004 Lok Sabha election and formally repealed in 2006.