Question: When was Princess Maria Cristina Of Bourbon-Two Sicilies's husband born?
Sentence (from "Princess Maria Cristina of Bourbon-Two Sicilies"): Caterina Apollonia Cecilia Agata di Borbone; 10 April 1877 – 4 October 1947) was the titular Grand Duchess of Tuscany from 28 February 1942 to 4 October 1947 as wife of Archduke Peter Ferdinand of Austria, Prince of Tuscany, the titular Grand Duke.
Relevant evidence: Yes