Biography (Source: WikiPedia)
Arthur Ernest Guinness was an Irish engineer and a senior member of the Guinness family. He usually went by the name of Ernest. Ernest was seen as the modernising technical expert among the Guinness family directors at Guinness from 1900 to the 1930s, until he was seriously injured in a motorboat accident at sea in Killary lough. A keen motorist, he bought a custom-built V16 Cadillac, from Mayfair dealer Lendrum & Hartman Limited which was exhibited at 1930 London Motor Show. In 1934 he was involved in building a new brewery at Park Royal in the suburbs of London. In 1923 he bought the "Fantome II", a 3-masted barque.
He was educated at Trinity College, Cambridge, served with the London Rifle Brigade and as a Deputy Lieutenant and a Justice of the peace for County Dublin.