I love it. A beautiful classic. I saw a ba for an Adelyn the other day, its cute and sort of trendy to fit in with todays crowd, but i much prefer
Adeline Add-ell-ine or even Adaline -Ay-da-line.
It doesn't work with
Ellie as a nn in my opinion. I would go with
Addie,
Addy,
Adele or
Della.
Another similarly nice name is
Emmeline. or
Emmaline.