Front runner Colin for baby boy

We are expecting baby #3, a boy! Big siblings are Vivienne and Graham. Our front runner name is Colin, but I'm having trouble committing. When I say it out loud I'm just not convinced it seems exactly right?

Other names on our list include Lewis, Calvin, Patrick, and Arthur - listed in order of preference. We are definitely open to other options if you have ideas! We tend to like that sweet spot of names that feel classic and familiar without being the too traditional Joseph/William/Michael vibe.

Names that were on our list that we eliminated included: Owen, Malcolm, Callum, Miles, Edwin.

We'd like to use Mark as the middle name as an honor name.