Catherine, Duchess of Cambridge and her husband Prince William welcomed their third child Monday in London.

The 36-year-old duchess gave birth to an 8 pound, 7 ounce boy at 11:01 a.m. local time. The latest royal baby’s name has not been revealed publicly.

William and Kate married in 2011 and have two other children: Prince George, 4, and Princess Charlotte, who turns 3 next month. Both were born at the same hospital, as were William and his younger brother Prince Harry.

The baby is Queen Elizabeth II’s sixth great-grandchild and fifth in line to the throne, after grandfather Prince Charles, father Prince William and his two older siblings.

The new arrival bumps Prince Harry to sixth place in the line of succession.

The 36-year-old duchess, formerly Kate Middleton, carried out her last official engagement on March 22 before going on maternity leave.

As in her previous pregnancies, Kate suffered from hyperemesis gravidarum, a severe form of morning sickness. Officials announced both her previous pregnancies before the traditional 12-week mark because she was too unwell to attend public engagements.

Many are betting on a traditional royal name for the baby, with bookmakers saying Arthur and James are the most popular guesses.