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."