Yep, Ayrton is pronounced that way. Its actually after a rally car driver that DP was a huge fan of when he was a boy, Ayrton Senna. So he has always wanted to name his boy after him.

ETA: I love all the girl names so picking just one will be HARD and Oscar William is DP's fave but i really want our first boy to be named Ayrton after all thats what DP said we HAD to name our first boy that