1) Irish girl name 
Dervla and Derval are female Irish given names, anglicised from Deirbhile and Dearbhail respectively. Dearbhla is a Gaelicised hybrid of the two names. Deirbhile means `daughter of the fili [poet]`. Dearbháil, a common medieval name, may mean `daughter of Fál`, Fál being a poetic name for Ireland; or else `true desire`. People with these ...