Most plausible theory for the emergence and enduring popularity of the Brahmin conversion narrative within sections of the St. Thomas Christian community.
The rigid caste system in Kerala appears to have become firmly established only around the 9th century, following the second Namboodiri migration. Christianity though not in the form we recognize today had already been present in Kerala for centuries before this. Therefore, there is little basis for claims of large scale Brahmin conversions during that earlier period.
As the caste system became more rigid, the Nasrani community also came to occupy a distinct position within it. It is well documented that these communities did not engage in significant missionary activity or widespread conversion. Instead, they largely maintained a degree of social exclusivity while adopting several Brahmanical customs. The Christianity that existed in Kerala before the arrival of the Portuguese was a distinctive tradition shaped by Dravidian and Persian influences, and possibly Gnostic currents. It represented a unique expression of Christianity that did not fit neatly into later Western theological or ecclesiastical categories.
Only after the arrival of the Portuguese did large-scale conversions begin. At the same time, Christianity in Kerala underwent increasing Latinization, with Western theological and ecclesiastical influences becoming more prominent. As the Portuguese converted people from a wide range of castes, older Nasrani families sought to preserve their distinct social status. In this context, the narrative of Brahmin ancestry appears to have gained prominence, particularly among influential families such as the Pakalomattam family. Such claims may have served to reinforce their prestige and legitimacy within the community.
The evolution of the Thoma Parvam (Songs of Thomas) is also significant in this context. The oral traditions and folk songs describing the conversion of local kings and Brahmins such as the Margamkali Pattu and Thoma Parvam were only systematically compiled, written down, and popularized between the 16th and 17th centuries, precisely during the Portuguese and post-Portuguese period. Most notably, they were compiled by Thomas Ramban, who claimed to be rewriting an older palm leaf manuscript preserved through 48 generations of his family. During this process, these oral traditions were shaped into a detailed, dramatic, and miraculous hagiography.
It is within these written traditions that we encounter narratives such as the arrival of St. Thomas in the first century, the miracle at Palayoor, the establishment of the Ezhara Pallikal (Seven and a Half Churches), and the ordination of the aristocratic lineages such as Pakalomattam, Sankarapuri, Kalli, and Kalyankal.
The post is intended as a point for academic discussion.