[1] Educated at Eton College, he attained the rank of officer in the Royal Navy.
Later, he was named a director of Guinness Peat Group and served as chairman of Guinness and Mahon merchant bank.
He married English-born Mary Jennifer Hollwey.
15 March 1961), Gillian Sarah Guinness (b.
8 July 1962) and Tania Caroline Guinness (b.