From the valley; noble
Dalaina is a modern American elaboration of the name Delaine or Delaney. It likely combines the Old French 'de la nee' meaning 'from the elder tree grove' or the Gaelic 'Dubhshláine' meaning 'from the black river' with the popular '-aina' suffix. It is also frequently associated with the English word 'dale', referring to a valley.
US births per 5-year period, 1990–present (SSA data).