John Henry Guinness
John Henry Guinness was a son of Henry Eustace Guinness and was chairman of Guinness Mahon.
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. They had three children: Ian Richard Guinness, Gillian Sarah Guinness and Tania Caroline Guinness.In 1986, he was pistol-whipped during his wife's kidnapping. She was rescued by Garda Síochána later that month. John Henry Guinness died of undisclosed causes on 29 February 1988, aged 52.
