| Princess Antonia | |||||
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| Crown Princess of Bavaria | |||||
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| Born | 7 October 1899 Schloss Hohenburg, Lenggries, Bavaria | ||||
| Died | 31 July 1954 (aged 54) Lenzerheide, Graubünden, Switzerland | ||||
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| House | Nassau-Weilburg | ||||
| Father | William IV, Grand Duke of Luxembourg | ||||
| Mother | Marie Anne of Portugal | ||||
Antoinette Roberte Sophie Wilhelmine (7 October 1899 – 31 July 1954), commonly referred to as Antonia, was the last Crown Princess of Bavaria before World War II. By birth, she was a member of the Luxembourgish House of Nassau-Weilburg as the child of Guillaume IV, Grand Duke of Luxembourg and Infanta Marie Anne of Portugal. Antonia was a survivor of the Sachsenhausen concentration camp.