(people.com) - And baby makes five for Cate Blanchett and her writer-director husband, Andrew Upton. Their third child, son Ignatius Martin, was born Sunday at a Sydney hospital, according to Australian magazine WHO . Just two days earlier Blanchett had attended her younger sister's university graduation. The couple, who are based in Australia, already have two sons: Dashiell John, 5, and Roman Robert, 3. In November, when she confirmed her pregnancy , Blanchett, 38, was informed of rumors that she was carrying a boy, prompting her to respond: "You know more than me. It's early days yet. It's due in April." The Aviator Supporting Actress Oscar winner and Upton are currently co-directors of the Sydney Theatre Company - a career move partly made in the interests of her children. Elder son Dashiell, says his mom, "needs to be settled, and I respect that." And the new little one seemed settled, too - even at February's Oscars. As Blanchett - with a very full belly - strolled the red carpet, she told PEOPLE, "He's actually asleep - believe it or not, which bodes well."