Shalidor

Shalidor was a male Nord. Shalidor is the famous Archmage of the First Era who created the Labyrinthian in Skyrim. The Labryinthian is known as the Archmage's testing ground and it still exists at the beginning of the Fourth Era. The great maze is also used to keep an artifact called Glamoril. Shalidor himself lived in a citadel called the Fortress of Ice.

Shalidor once fought the Dwemer of the Rourken Clan. The Rourken Clan was one of the Dwemer Clans that refused to make peace with the Chimer in the forming of the First Council of Velothi. Instead they exiled themselves out of the land, to the west, to Hammerfell. It's possible that during the long march to Hammerfell, the Rourken Clan clashed with Archmage Shalidor. The artifact Spellbreaker is a powerful Dwemeri shield that was used during the battle. The shield is able to reflect magicka and silence any nearby mage.

The Archmage Shalidor was well known for his spell Shalidor's Mirror, which he used to reflect an offensive spell back to the caste. Some other scholars speculate that Shalidor, after the Battle with the Rourken Clan, tries his best to find the exact magical effect of the Spellbreaker, from his research Shalidor's Mirror was born.