In Assassin's Creed III, Ratonhnhaké:ton commonly uses the name Connor.
Connor is the name by which the game usually identifies its main historical protagonist. He is the son of Haytham Kenway and a Kanien'kehá:ka woman, and he becomes involved with the Assassin Brotherhood during the American Revolution.
The character’s birth name is Ratonhnhaké:ton, reflecting his Kanien'kehá:ka heritage. He later adopts Connor as a name that helps him move through colonial society. This dual naming is an important part of the story’s treatment of identity, family, and competing loyalties.
Haytham is Connor’s father and the protagonist of the game’s opening sequence, while Achilles Davenport becomes Connor’s mentor. Desmond Miles belongs to the modern-day storyline. Those names are therefore plausible choices, but none is Connor’s commonly used name.