(where available) O'Canavan Early Origins Spelling variations of this family name include: Canavan, O'Canavan, Canaman, Kinevan, Kinavan, Kanavan, O'Kennevain and many more. First found in Galway , where they held a family seat as hereditary physicians to the O'Flahertys. Traditionally, this great sept is descended through the Fihillys from Muredach Maolleathan