April 10th
1940: Princess Marie Aglaë of Liechtenstein, wife of Prince Hans-Adam II
1973: Princess Tatjana of Liechtenstein, daughter of Prince Hans-Adam II
2007: Princess Ariane of Orange-Nassau, daughter of Crown Prince Willem-Alexander
April 16th
1940: Queen Margrethe of Denmark
1955: Grand Duke Henri of Luxembourg
1992: Prince Sébastien of Luxembourg, son of Grand Duke Henri
2008: Princess Eléonore, daughter of Prince Philippe, Duke of Brabant
April 20th
1999: Prince Georg of Liechtenstein, son of Hereditary Prince Alois
April 21st
1926: Queen Elizabeth II
2007: Princess Isabella of Denmark, daughter of Crown Prince Frederik
April 27th
1967: Prince Willem-Alexander of Orange-Nassau
April 29th
2007: Infanta Sofia, daughter of Prince Felipe of Asturias
April 30th
1946: King Carl XVI Gustaf of Sweden
2002: Miguel Urdangarin, son of Infanta Cristina of Spain