Actually (according to a 1950’s baby name book I have) [name]Eastlyn[/name] is a legit name, meaning waterfall! So it has at least been around since the 1950’s! I think it has a pretty quality to it - I prefer the “y” spelling myself:)
Eastlin is pretty cute to me! This could be because I grew up with a female cousin names [name]Easton[/name], so that name itself sounds more feminine to me just due to the association!