Patroclus
From Tardis Wiki, the free Doctor Who reference
Patroclus was a young Greek warrior who fought in the Trojan War. He was a friend of Achilles.
Patroclus was slain in battle by Hector, who later boasted about it to Achilles. (TV: The Myth Makers)
Patroclus died because he was mistaken for Achilles. (AUDIO: Farewell, Great Macedon)