Ó hÍceadha

Ó hÍceadha (in English: Hickey; O'Hickey) is a surname of Irish origin. According to historian C. Thomas Cairney, the O'Hickeys were one of the chiefly families of the Dal gCais or Dalcassians who were a tribe of the Erainn who were the second wave of Celts to settle in Ireland between about 500 and 100 BC.