Mar Thoma Syrian Church Adoor Diocese

Adoor Diocese was part of Kottarakara - Kollam diocese which covered a larger area from Achenkoil river (North) to Kulasekharam (South) without having headquarter of its own. In 1957, Rt. Rev. Thomas Mar Athanasius Episcopa bought 60 cents of land at Adoor near government high school and constructed new Aramana there.

The members of Adoor Immanuel Marthoma Church, Mr. K.V. Oommen Kottaykattu and Mr. P.I. Pothen Plamuttil, are to be specially acknowledged for their valuable support at that time. Though Thomas Mar Athanasius Episcopa served only for a short time and was shifted to new diocese as per the arrangement of the church, Thirumeni's vision and enthusiasm gifted a centre for the functioning of the diocese. The following are the chronological Episcopal succession of the diocese.