interesting facts from
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How is King Albert related to other European Monarchs?
Denmark King Albert II and Queen Margrethe II are third cousins once removed. They are descendants of the Swedish King Oscar II. These are the lines: Oscar II - Carl - Astrid - Albert II and Oscar II - Gustaf V - Gustaf VI Adolf - Ingrid -Margrethe II.
Sweden King Albert II and King Carl XVI Gustaf are third cousins once removed. They are descendants of the Swedish King Oscar II. These are the lines: Oscar II - Carl - Astrid - Albert II and Oscar II - Gustaf V - Gustaf VI Adolf - Gustaf Adolf - Carl XVI Gustaf.
Norway King Albert II and King Harald V are first cousins. They are descendants of the Swedish Prince Carl, Duke of Västergötland. These are the lines: Carl - Astrid - Albert II and Carl - Märtha - Harald V.
United Kingdom King Albert II and Queen Elizabeth II are third cousins. They are descendants of the Danish King Christian IX. These are the lines: Christian IX - Frederik VIII - Ingeborg - Astrid - Albert II and Christian IX - Alexandra - George V - George VI - Elizabeth II.
Spain King Albert II and King Juan Carlos are fourth cousins. They are descendants of the French King Louis Philippe I. These are the lines: Louis Philippe I - Louise - Philippe - Albert I - Leopold III - Albert II and Louis Philippe I - Ferdinand Philippe - Louis Philippe - Louise - Maria - Juan Carlos.
Luxembourg Grand Duke Henri is King Albert II's nephew. King Albert's sister Josephine-Charlotte is the Grand Duke's mother.
The Netherlands King Albert II and Queen Beatrix are third cousins once removed. They are descendants of Wilhelm von Nassau-Weilburg, Duke of Nassau. These are the lines: Wilhelm - Sophia - Carl - Astrid - Albert II and Wilhelm - Helene - Emma - Wilhelmine - Juliana - Beatrix.
Liechtenstein King Albert II and Prince Hans Adam II are third cousins. They are descendants of the Portuguese King Miguel I. These are the lines: Miguel I - Marie José - Elisabeth - Leopold III - Albert II and Miguel I - Marie-Thérèse - Elisabeth - Franz Josef II - Hans Adam II.
Monaco King Albert II and Prince Rainier III are fourth cousins. They are descendants of Karl Ludwig, Grand Duke of Baden. These are the lines: Karl Ludwig - Josefine - Marie - Albert I - Leopold III - Albert II and Karl Ludwig - Marie Elisabeth - Mary Victoria Douglas-Hamilton - Louis II - Charlotte - Rainier III.
Bulgaria King Albert II and King Simeon II are third cousins once removed. They are descendants of the French King Louis Philippe I. These are the lines: Louis Philippe I - Louise - Philippe - Albert I - Leopold III - Albert II and Louis Philippe I - Clémentine - Ferdinand I - Boris III - Simeon II.
Greece King Albert II and King Constantinos II are third cousins. They are descendants of the Danish King Christian IX. These are the lines: Christian IX - Frederik VIII - Ingeborg - Astrid - Albert II and Christian IX - Giorgios I - Konstantinos I - Giorgios II - Konstantinos II.
Portugal King Albert II and Prince Duarte Pio are second cousins once removed. They are descendants of King Miguel I of Portugal. These are the lines: Miguel I - Marie José - Elisabeth - Leopold III - Albert II and Miguel I - Miguel - Duarte Nuno - Duarte Pio.
Romania King Albert II and King Mihai I are third cousins. They are descendants of the Danish King Christian IX. These are the lines: Christian IX - Frederik VIII - Ingeborg - Astrid - Albert II and Christian IX - Georgios I - Constantine I - Helena - Mihai I.