15 April

1922 Graham Whitehead born 1956 Juan Manuel Fangio won the non-championship Syracuse Grand Prix 1963 Innes Ireland won the non-championship Glover Trophy 1963 Jim Clark won the non-championship Pau Grand Prix 1967 Jack Brabham won the non-championship Spring Trophy 1973 Ernst Klodwig died 1979 Gilles Villeneuve won the non-championship Race Of Champions 2001 Ralf Schumacher won the San Marino Grand Prix