Hugo José O'Donnell y Duque de Estrada, 7th Duke of Tetuán, GE, KM, FRHistS, is a Spanish peer, naval officer, lawyer and historian who was the vice president of the International Commission for Marit
The future Duke of Tetuán (left) as a teenager in 1963 with Commandant Patrick Denis O'Donnell, an officer in the Irish Army
Patrick Denis O'Donnell
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Patrick Denis O'Donnell was an Irish military historian, writer, former UN peace-keeper, and Commandant of the Irish Defence Forces.
Patrick D. O'Donnell at 83 years
O'Donnell in Honour Guard when Lieutenant, 1950s
Comdt. P.D. O'Donnell during Papal Visit to Ireland, Dublin, 1979