 The couple's first child, Countess Emma Luana Ninette Sophie of Orange-Nassau, Jonkvrouwe van Amsberg, was born on 26 March 2005 in London.Their younger daughter, Countess Joanna Zaria Nicoline Milou of Orange-Nassau, Jonkvrouwe van Amsberg, was born on 18 June 2006, also in London.On 17 February 2012, Prince Friso was buried under an avalanche in Lech, Austria, and he was taken to a hospital in Innsbruck.