Favorite Constellation

I'm working on a fun idea for a story, and I'm excited to share it with all of you soon. For now I need your input. In this story an elite team of fighters train at a camp named for a star or constellation. In this series I've already used Orion and Draco, so I need to know what this one is called. It is set in England during the Middle Ages. So, here are my current choices.

What Constellation should I choose?

• 0%Leo
• 0%Sirius
• 0%Lyra
• 0%Andromeda