As a name?
It was a old English kingdom that later became Northumbria (the Anglo-Saxon kingdom rather than the present country). It roughly corresponds with present-day Yorkshire which is why it appeals (being the mad Yorkshirewoman that I am).
It's pronounced DEY-ruh/DAY-ruh.
Deira Clementine
Deira Margaret
Deira Josephine
Deira Frances
Deira Grace
Deira Emmeline
Deira Poppy
Deira Winifred
Deira Genevieve
Deira Constance
Deira Phoebe
Deira Verity
Deira Cecily
Would it work?