Giulio della Rovere, also known as Giulio Feltrio della Rovere (5 April 1533 - 3 September 1578) was an Italian Catholic Cardinal of the della Rovere family.
Della Rovere was the second son of Francesco Maria I della Rovere and Eleonora Gonzaga[1] and the younger brother of Guidobaldo II della Rovere, Duke of Urbino.
As a young boy, Della Rovere was nominated for a position as Cardinal and was officially elevated to Cardinal in 1548 at only 13 years of age.[2] Nevertheless, he later had two illegitimate sons Ippolito[3] and Giuliano. Both were later legitimised, as were their children, by Pope Pius V in 1572 and Ippolito was made Marchese di San Lorenzo.