When someone asks this question about a ‘matching’ name I always wonder who they have in their heads as having the power to decide what ‘matches’ 🤔 Is it friends and family? Or the children themselves? Or strangers? I don’t understand the reason matching matters so much.
So OP, if you had Henry, Florence and River, or Henry, Florence and Jackson, or Henry, Florence and Tulisa, names which could be argued not to ‘match’, but that you really liked, would it bother you if they were perceived as ‘non-matching’?
I say if you like a particular name, go for your life! Chances are your children won’t live in the same neighbourhood when they’re adults.
Hopefully more helpful though - if you definitely want something to ‘match’ with Henry and Florence, then a look through the Daily Telegraph and Times birth announcements sections is a good place to start.
All the best with the rest of your pregnancy 💐