Dunleavy Family History
Dunleavy Name Meaning
Irish: shortened Anglicized form of Gaelic Mac Duinnshléibhe or Ó Duinnshléibhe ‘son of Donn Sléibhe’ a personal name composed of the elements donn ‘brown-haired man’ or ‘chieftain’ + sléibhe ‘of the mountain’ meaning ‘chieftain (literally brown one) of the mountain’.
Source: Dictionary of American Family Names 2nd edition, 2022