Dutch prince Johan Friso dies 18 months after skiing accident. Johan Friso gave up his claim to the throne to marry Mabel Wisse Smit in a wedding not sanctioned by the government. Dutch prince Johan Friso, who fell into a coma following a skiing accident in February 2012, has died, the government said on Monday. Prince Friso died from complications that arose as a consequence of the brain damage caused by oxygen deprivation following his skiing accident, it said in a statement.