The name Adelia is a girl's name of German origin meaning "noble, nobility". Adelia and is often added to lists like Best Cool Unusual Girls' Names and discussed in our forums with posts like "Girls Makeover - Two Middles".
From the experts:
The super-success of Adele, both the singer and the name, has brought attention to all her cousins--Adela, Adeline, Adelina--and the lovely Adelia. An undiscovered gem just waiting to be discovered.
Some pluses: Adelia is the name of a flowering plant, and of an opera by Donizetti that premiered in 1841.