morganth on Nostr: I'm trying to remember a kids' book I read ages ago. I think it had a fairy tale ...

I'm trying to remember a kids' book I read ages ago. I think it had a fairy tale setting. A couple who couldn't have kids kidnapped a baby from another couple and spirited him away. The couple spent years and years trying to find them. Eventually they did, and said "we're your real parents, you can come home now". And the kid, who had only ever known the other couple as parents, was happy with them and didn't want to go back to his "real" parents.

Anyone know the book? Boosts welcome.