As Spain's Princess Cristina goes on trial on tax fraud charges alongside her Olympic handball champion husband, here is a look at some other European royals who have been caught up in controversy or claims of wrongdoing.
PRINCE ERNST AUGUST OF HANOVER
Prince Ernst August, the husband of Princess Caroline of Monaco and the patriarch of one of Europe's oldest ruling families, has had more than one run-in with the law. In 2004, he was convicted of beating up a hotel owner, and in 1999 he was fined for attacking a photographer.
In 2000, a tabloid published a photograph allegedly showing the prince urinating on the Turkish Pavilion at the Expo 2000 fair in Hanover. The...