His downfall was precipitated by the ascension of the Archduke Matthias and his signing of a treaty known as "The Perpetual Edict." This man was raised under the pseudonym "Geronimo" at the Castle of Villagarcia.  He captured Tunis for a brief period, but didn't really make his name at court until a series of successful campaigns in Granada against the Moriscos. His last military success came at Gemblours, where he crushed a rebel army, and though he tried to reassert himself as governor general of the Netherlands he would die of fever a few months later. His greatest victory came alongside Agostino Barbargigo's Venetian forces off the coast 
His downfall was precipitated by the ascension of the Archduke Matthias and his signing of a treaty known as "The Perpetual Edict." This man was raised under the pseudonym "Geronimo" at the Castle of Villagarcia.  He captured Tunis for a brief period, but didn't really make his name at court until a series of successful campaigns in Granada against the Moriscos. His last military success came at Gemblours, where he crushed a rebel army, and though he tried to reassert himself as governor general of the Netherlands he would die of fever a few months later. His greatest victory came alongside Agostino Barbargigo's Venetian forces off the coast of Corinth in 1571 at the expense of Ali Pasha's navy. FTP, identify this victorious commander of the Holy League at Lepanto.
His downfall was precipitated by the ascension of the Archduke Matthias and his signing of a treaty known as "The Perpetual Edict.
Don John or John of Austria or Don Juan of Austria