Geoffroy de Charnay, who was burned at the stake with Jacques de Molay.
"Charney and his wife were the first documented owners of the cloth, and they were the ones who made it so popular by sensational public expositions. ... What interests us most here is the possible relationship between Geoffroy de Charney, owner of the cloth, and Geoffroy de Charnay, the Templar. (The Jesus Conspiracy Kersten & Gruber pps 211, 212)
"In 1983 Pope John Paul II made a special journey to Portugal to persuade ex-king Umberto II in his exile to bequeath the Turin Shroud to the Vatican. Shortly thereafter the former king of Italy died." (Ibid plate 64. p183)