Piccolomini, the name of an illustrious family of science in Italy, of which Æneas Silvius (Pope Pius II.) was a member; also Octavio I., Duke of Amalfi, who distinguished himself, along with Wallenstein, in the Thirty Years' War at Lützen in 1632, at Nordlinger in 1634, and at Thionville in 1639; was one of the most celebrated soldiers that had command of the imperial troops (1599-1656).