From the French Wikipedia page [1]; more information on the Wikipedia page Hungarian - there is also some information on the German and Polish pages.
Born 30 January 1927, Paris, and died 7 November 1956, Neuilly sur Seine, France, was a Franco-Swiss journalist.
His father came from the Swiss canton of Tessin and his mother was from Monaco. He joined Paris Match as a reporter in 1948 and made many visits to Eastern Europe, including the Soviet Union with the journalist Dominique Lapierre and their wives.
He died in the clinic at Neuilly-sur-Seine from wounds received in Budapest on 30 October while photographing the events of the uprising.
With the news of the 1956 Revolution, he and three other partners travelled to Hungary. On October 28 he was in Mosonmagyarovar and photographed the funeral of the victims of the volley. The next day he arrived in Budapest, where after the ceasefire and the general amnesty was proclaimed, he was relieved to take photos of the streets of Pest. On the morning of the 30th, when he learned of the clashes in Republic Square he went with his correspondent and helper Paul Mathias. He was photographed in front of House No. 25 close to the House of Commons, when, under the circumstances still unclear, there was a group of submachine guns: fourteen balls were fired in his body, breaking his legs, belly and spine. The wounded reporter was transported urgently to the Péterfy Sándor Street Hospital, where he was operate on twice. His correspondent succeeded in bringing him on airplanes to Paris on November 3, 1956 and to undergo new surgeries at the Neuilly-sur-Seine clinic.