1752
Martyrdom of St Devasahayam Pillai
After three years of cruel suffering, paraded on a buffalo, scourged and chained for months to a tree in the wilderness, Devasahayam was shot on 14 January 1752 at the Travancore lines by the Aralvaimozhi gap, dying with the names of Jesus and Mary on his lips. The old accounts do not name the hill; Kattadimalai is the name it carries from the national shrine that stands there now. Of the relics kept at Vadakkankulam, the Jesuit historian Auguste Jean wrote in 1894 that the church held a part of his garment and the chains with which he was bound; the diocese records that the head-cloth he wore is kept here too. His wife, baptised Gnanapoo Theresa, lies buried in the parish cemetery.
In English
"Thus died, after three years of cruel sufferings, this Christian hero, on 14 January 1742 [recte 1752]. His holy body was buried at Cottar, in the church of St Francis Xavier. The church of Vadakenkoulam possesses a part of his garment and the chains with which he was bound."
What this source establishes
The oldest and only primary witness to the relic — and it says the church holds "a part of his garment and the chains with which he was bound". NOT a turban. The head-cloth is the diocese's modern account. (This same page carries Jean's known misprint of the martyrdom year as 1742; it is 1752.)