sentences:  This first Duke of the newly created Duchy was James FitzJames (known locally as Jacobo Fitz-James Stuart) was the son of King James II of England, who had also named him Duke of Berwick and Viceroy of Ireland.He was a marshal in the French Army and an officer in the Spanish army during the War of Succession.The third Duke of the Duchy was named for his grandfather, the first Duke.