Philibert spent part of his youth at the court of Duke William IV of Bavaria in Munich.

He fought on the side of King Charles IX of France, the son in law of Emperor Maximilian II.

Philibert was killed on 3 October 1569 in the Battle of Moncontour against the Huguenots, which the French king won.

[1] According to his friend, Heinrich von Stein, he left the battlefield alive and was then pursued by the Huguenots to a castle on the Spanish border, where they caught up with him and killed him.

He gave his subjects freedom of religion and he even married a Catholic, Mechthild of Bavaria.