Ottavio Farnese reigned as Duke of Parma and Piacenza from 1547 until his death and Duke of Castro from 1545 to 1547 and from 1553 until his death. Wikipedia
Born: October 9, 1524, Valentano, Italy
Died: September 18, 1586 (age 61 years), Piacenza, Italy
Grandchildren: Ranuccio I Farnese, Odoardo Farnese, Margherita Farnese, and more
Children: Alexander Farnese, Duke of Parma
Parents: Pier Luigi Farnese and Gerolama Orsini
Spouse: Margaret of Parma (m. 1538–1586)
Siblings: Alessandro Farnese and Ranuccio Farnese