Porter, Andrew Marshall (1874–1900), hockey international, was born 6 January 1874 in Dublin, third among four sons and two daughters of Sir Andrew Marshall Porter (qv), of Belfast, and Agnes Porter (née Horsbrugh) of Peeblesshire, Scotland. Marshall Porter, as he was known, was educated at TCD, and was elected a scholar of the house in classics (1895) before obtaining first place in the classical moderatorship (1897). He enrolled at King's Inns in 1894 and was called to the bar in 1898. He was an outstanding sportsman, captaining Trinity at cricket (1895). A right-handed batsman, he scored a total of eighty-four runs in four first-class matches for the university. He also played for Ireland in 1896, although not in a first-class match.
His major sport, however, was hockey. A member of the Three Rock Rovers club, he played six times for Ireland, and also captained the side, in an international career that lasted from 1896 to 1898, playing three times against both England and Wales. He had all the qualities of a top-class centre-forward: exceptional ball control, an ability to play well on both his left and his right side, pace, and a fine shot. Unusually for the time, he had a preference for playing in tennis shoes. Described as tall, powerful, and classically handsome, despite his sporting prowess and leadership abilities he was quiet and reserved by disposition. In 1944 T. S. C. Dagg, in his book on the history of Irish hockey, included him at centre-forward in his selection of the best Irish team of the pre-1914 era.
On the outbreak of the Boer war (October 1899) he gave up a promising career at the bar to enlist in the 45th Company of the 13th Battalion of the Imperial Yeomanry. He died of wounds received while attempting to bring water to his company under fire on 5 June 1900, at Lindley, in the then Orange Free State Republic. The board of TCD, in a rare move, passed a vote of sympathy to his family. A stained-glass window, commissioned in his memory, can be found in the Graduates’ Memorial Building in TCD, and a Marshall Porter prize in classics was founded in his memory by his parents. He was unmarried.