ARMS Della Rovere of Savona. The golden oak on a blue background has enriched the papal insignia when the House has generated two Popes: Pope Sixtus IV in 1471; born Francesco Della Rovere; and Pope Julius II; born Giuliano della Rovere; nephew of Francis; in 1503. From "Theatre of Arms; namely General Collection of Arms and noble signs of the most illustrious and noble houses that existed at one time and still flourish throughout Italy; illustrated with relevant genealogical-historical notions by Leo and Francesco Tettoni Saladini". Cl. Wilmant and children; Lodi; 1841-1851