The Dukes of Castel Duino are a noble family in Italy descending from the Bohemian line of the Princely House of Thurn and Taxis. The title was created along with the additional title of Principe della Torre e Tasso in 1923 for Prince Alexander of Thurn and Taxis following his naturalisation in Kingdom of Italy. The second duke, Raimundo, married Princess Eugénie of Greece and Denmark a member of the Greek Royal Family.
The seat of the family is Duino Castle in Duino in the Province of Trieste, Friuli-Venezia Giulia.
Dukes of Castel Duino (1923-present)
The heir is Prince Dimitri della Torre e Tasso (born 1977).
References
Duke of Castel Duino Wikipedia(Text) CC BY-SA