Henry, Duke of Parma
Henry, Duke of Parma and Piacenza was the head of the House of BourbonParma and the pretender to the defunct throne of Parma from 1907 to 1939.
Prince Enrico was born at Wartegg Castle in Rorschach, the second but eldest surviving son of Robert I, Duke of Parma and his first wife, Princess Maria Pia of BourbonTwo Sicilies. He had learning difficulties and from 1907 , his brother Elias took up the role as head of the family and served as regent throughout his and his brother Josephs titular reigns, although Enrico continued to be considered by legitimists as Henry of Parma. Enrico died at Pianore, near Lucca, Italy, unmarried and without issue and was succeeded as titular pretender of Parma by his brother Joseph upon his death.
Source: Wikipedia