Brynn as a nickname for Brenna?

…or is it too much of a stretch?

I don’t see why. A nickname can be anything right? Not all nicknames are name related. If you like it why not use it.

I think [name]Brynn[/name] is a fantastic nn for [name]Brenna[/name]! And I want to repeat everything cka said. A nn can be anything.

I love it! It’s a perfectly acceptable nickname =)
If [name]John[/name] can somehow turn into [name]Jack[/name], [name]Brenna[/name] can EASILY become [name]Brynn[/name].

Oh I love the names [name]Brenna[/name] and [name]Brynn[/name]. those are both great B names for sure! [name]Brynn[/name] is a perfectly good name on its own