You need to be specific, Marcus was a very common name in Rome. I will assume you mean emperor Marcus Aurelius. He was a stoic philosopher The stoics believed in governing/controlling one's emotions and temper in order to lead a better, happier and more virtuous life.
It means to lose your temper, and get mad.
A sword is tempered to make it strong and capable.If a sword loses it's temper, it is useless in battle.
To temper steel, is to make stronger or harden. loose your temper is to lose your strength, control, resolve, etc It usually means that you have lost control over your anger.
I lost my temper and stormed away
Temper Temper was created in 1991.
it means lost his mind
He want's to know if you get angry easily.
easily incited to anger, someone with a temper,
it means you rowdy and constantly moving.
Meaning you snapped and got angry.
it means to make someone mad