What this source establishes
Where the number actually comes from. The diocese's own parish page carries the figure this moment rests on - and dates it 1686, a return rather than the same visit as the chapel. It is the diocese reporting on its own parish, so it is tradition and not outside corroboration; but it is the cleanest statement of the two hundred that exists, and it is why the moment keeps the number rather than doubting it.
This is as much of it as we may lawfully print. The rest is at tuticorindiocese.org.