Catalogue of ancient Nasrani Churches, their affiliations and population statistics in the background: Until the time of the synod of Diamper, there was no evidence available to suggest any divisions among the Syrian Christians. After the Synod of Diamper (AD 1599) – the Coonan Cross Oath ( AD 1653 )- prompted the division of the community and both parties claimed over different churches. After the Coonan Cross Oath, the whole Nasrani community was divided into two groups, one continued to be loyal to the Roman Catholic Church keeping the East Syriac liturgy and traditions, called the “old party” or “Pazhayacoor” and the other under the Archdeacon known as new party or “Puthencoor”. Both were using the same liturgy and traditions for some time, but later, the Puthencoor moved towards the Church of Antioch and adopted the West Syriac liturgy and traditions and thus made the name “Puthencoor” appropriate. As the community was divided, the churches were also divided among them into two groups. There were a third group of churches which remained to be shared between these two communities.