Question: When did Princess Maria Pia Of Bourbon-Two Sicilies (1849–1882)'s husband die?
Sentence (from "Robert I, Duke of Parma"): 16 November 1907) was the last sovereign Duke of Parma and Piacenza from 1854 until 1859, when the duchy was annexed to Sardinia-Piedmont during the "Risorgimento".
Relevant evidence: Yes