name of the second child

They sound really similar when you say them out loud. If you call one of them, they might both come running. Or if you're mad at one of them, the other might get upset because they think you mean them.
It's really hard for a second child, I think. We also had a long time doubting about a second one coming. We've figured it out now, and the names are totally different so they'll never get confused when you call one of them, for example.

I don't think Fenna and Lennon sound alike when you call them out. The 'a' in Fenna sounds long, and the '-non' part sounds closed. I do think the names go well together though