Wikipedia
Saint Defendens of Thebes is venerated as a martyr by the Catholic Church. Venerated as a soldier-saint, Defendens was, according to Christian tradition, a member of the Theban Legion, and thus martyred at Agaunum.
Particular veneration for Defendens was widespread in Northern Italy; evidence for this cult dates from as early as 1328. His feast day was celebrated in the cities of Chivasso, Casale Monferrato, Novara, and Lodi on January 2, and oratories, altars, and confraternities were dedicated to him. He also enjoyed veneration in Marseilles; the Catholic Encyclopedia states that “several saints belong in a particular way to Marseilles: the soldier St. Victor, martyr under Maximian; the soldier St. Defendens and his companions, martyrs at the same time...” But as Antonio Borrelli writes, some scholars believe that the Defendens venerated in Italy is different from the martyr who was a member of the Theban Legion.