Question: What is the date of birth of Princess Maria Ludwiga Theresia Of Bavaria's husband?
Sentence (from "Princess Maria Ludwiga Theresia of Bavaria"): Her husband, Prince Ferdinand Pius, Duke of Calabria, became the head of the House of Bourbon-Two Sicilies on 26 May 1934, thus she was titular queen consort of the Two Sicilies.
Relevant evidence: Yes