Marth Mariam Cathedral

Marth Mariam Cathedral is the cathedral of the Chaldean Syrian Church of India, part of the Assyrian Church of the East. It is located in Thrissur City in the state of Kerala, It is the city's first Christian church inside the fort gates and is the fourth church in the Thrissur Municipal Corporation
The church established in 1814 by Chaldaya Suriyani (Ancient Indian Christian community) and was originally known as Our Lady of Dolours Church. Abraham Kathanar of Palai was the head of the Chaldean Syrian faction in 1814, whose headquarters was at Thrissur.
A group supporting Chaldean Catholic bishop Elias Mellus was based in Our Lady of Dolours. They eventually broke with the Catholic hierarchy and formed the Chaldean Syrian Church which is part of the universal Assyrian Church of the East. They retained the Our Lady of Dolours building, but renamed it(revived the old name) Mart Mariam. Mart Mariam church, Thrissur now serves as the cathedral of the Chaldean Syrian Church of India which is part of the universal Assyrian Church of the East.