Some Northist historically maintained versions which countered this assertion, claiming that the Knanaya descend from a "dobi" (washerwoman); in some versions of this story, she became Thoma's concubine, while in others she married a lower-caste Maaran boy. This assertion is based on the 1676 Portuguese document "M.S Sloane 2748-A", a likely forgery attributed to the Carmelite priest Father Mathew.