after 1775
The father they would not let go
They never let go of Thomassini. In his lifetime he had won them by his gentleness, he had finished their church, and he was the last Jesuit they would have for sixty-three years. He had died away from the village and was buried elsewhere, but his own people “raised a monument in their midst” and kept his memory as a saint's. Ninety years after his death a Jesuit writing about this district still used the present tense: “The Christians venerate him as a saint, give his name to their children, and visit his tomb with an extreme devotion.” Even those who were not Christians, he added, called on him in their troubles, holding that his intercession brought the rain down on their harvests.
What this source establishes
The death only. Auguste Jean uses the PAST tense — they cherished his memory "for a long time" — and speaks of drought, not harvests. He does not second Bertrand's present-tense veneration, and neither source locates the tomb at Vadakkankulam.