Arlena Is A Girls Given Name Of Gaelic Origin. This Beautiful Name Harkens Back To The Irish Name Arlene, Meaning "oath" Or "promise." Arlena Is Also A Diminutive Of The French Name Charles And Its Feminine Counterpart, Charlene. Through This Lens, Arlena Is Symbolic Of A "free Spirit." Your Confident Little Gem Is Bound To Make Her Way In The World, Pledging To Live Life As An Independent-minded Young Woman!