The meaning of the Cana epithet is unclear; it may refer tothe town of Cana or the land of Canaan in the Bible, or it may be a corruption of a Syriac term for merchant. However, scholar Richard M. Swiderski states that none of these etymologies are entirely sound. Knanaya priest and scholar Jacob Kollaparambil argues that the "Cana" form is a corruption introduced by European scholars in the 18th century based on the Malayalam form Knāy and its variants found in the folk tradition of the Knanaya and the common parlance and literature of the people of Malabar. This may be a reference to the Christian community of Kynai, in Bét Aramayé in Persia.
History
Written accounts of Thomas of Cana date to the India's Portuguese period. Different versions give different dates for the events; some place them in 345; others as late as the 9th century. In most accounts, Thomas is said to have been a Syrian merchant, distinct from Thomas the Apostle, who preceded him in evangelizing in India. According to the traditions, Thomas of Cana led a group of 72 families, as well as clergymen, to the Malabar coast. There they met and supplemented the Saint Thomas Christians, who had been evangelized by Thomas the Apostle in the 1st century. Copper plates referring to this story exist, but are of a substantially later date. Though some scholars doubt the veracity of the Thomas of Cana tradition, others suggest it may reflect a historical migration of East Syriac Christians to India. This may have been the era in which the region's relationship with the Church of the East developed. Stephen Neill suggests that East Syriac Christians may have come to India specifically because there was already an established Christian community, to whom they imparted East Syriac traditions.
Northists and Southists
The arrival of Thomas of Cana figures into traditions concerning the division of the SaintThomas Christians into "Northist" and "Southist" factions. In these versions, the Southists or Knanaya are the direct descendants of Thomas of Cana and his followers, while the Northists descend from the pre-existing local Christian body converted by Thomas the Apostle. In some versions, Thomas of Cana had two wives or partners, one the ancestor to the endogamous Southists, and the other the ancestor to the Northists. All these stories are apocryphal, though both Southist and Northist groups use variants to claim superiority for their faction.