Original: Planetary The name comes from Middle English Tiwesday, from Old English Tiwes dæg, named after the Nordic god Tyr, who was the approximate equivalent of the Roman war god Mars, and Greek god Ares.
Simplified: History of the name The name Tuesday comes from a Middle English word, Tiwesday. This was named after the Nordic god Tyr. Tyr was the God of War, like the Roman war god Mars, and Greek god Ares.