Hugh O'Donnell

Captain Hugh O'Donnell (; June 1605 – April 1625) was an Irish-born soldier who served in the first Irish regiment (tercio) of the Spanish military. He was the son of Gaelic nobles Caffar O'Donnell and Rosa O'Doherty, and took part in the Flight of the Earls. He fought in the Eighty Years' War and died in the Siege of Breda, aged 19.

Family background and early life Hugh O'Donnell was born in June 1605. He was descended from the O'Donnell clan of Tyrconnell, His father Caffar was the youngest son of Hugh McManus O'Donnell, who ruled as Lord of Tyrconnell from 1566 to 1592. Caffar served with his elder brothers Hugh Roe, Rory and Manus during the Nine Years' War, which ended with the Irish confederacy's surrender in 1603.

Hugh's mother, Rosa O'Doherty, was a daughter of Sean O'Doherty of Inishowen and brother of Cahir O'Doherty.

Hugh O'Donnell eventually became a captain in the first Irish regiment in the Spanish army (the "Old Irish Regiment"; ), which was led by Shane. Hugh O'Donnell died in 1625 in the Siege of Breda. His death was reported under the date of 20 April 1625, and he was laid to rest in the chapel of the Irish Franciscans. He was not yet twenty years old.