Save Type Surname (from given name) Usage Irish Meaning & HistoryExpand Links Irish Gaelic form of HENNESSY. Related NamesDetails VariantsAngus, Guinness, Hennessy, MacGinnis, MacGuinness, Mag Aonghuis, McGinnis, McGuinnessOther Languages & CulturesAngus, Innes, MacAngus, MacCance, McInnes(Scottish) Entry added February 12, 2018