Question: When is Cecilia Maria De Candia's mother's birthday?
Sentence (from "Cecilia Maria de Candia"): She was the daughter of two famous opera singers, Giulia Grisi and the Cavaliere don Giovanni Matteo de Candia, who sang under the popular name of Mario the tenor, the youngest son of Stefano de Candia, Royal Governor General of Nice, Marquis of Candia and Aide-de-Camp to the King of Sardinia, Carlo Felice di Savoia.
Relevant evidence: Yes