Claim: The Catholic saint Saint Roch's said membership to the house of la Croix de Castries was debunked.
Evidence: Family tradition holds that one of the family's members was saint Roch, the pilgrim apostle who dedicated his life to the service of the sick and plague-victims in the 13th century. Saint Roch or Rocco (lived c. 1348 – 15/16 August 1376/79 (traditionally c. 1295 – 16 August 1327) is a Catholic saint, a confessor whose death is commemorated on 16 August and 9 September in Italy; he is specially invoked against the plague.