Who were the two eminent visitors to the first grand prix held at silverstone in 1950?

Question

im not sure if it was Yves Giraud-Cabantous and Eugene Martin

if its not them who was it

Answer 1

Held on May 13 at Silverstone Circuit, and also designated as the Grand Prix of Europe for 1950, this very first World Championship round was attended by King George VI, Queen Elizabeth, Princess Margaret, and Earl & Lady Mountbatten.

The Alfa Romeo factory team arrived at the circuit with four 158s (for Fangio, Farina, Fagioli & Parnell). Ferrari decided not to take part but there were a handful of Maseratis, one of them a factory car for Louis Chiron. Talbot-Lago sent over two factory cars to be driven by Yves Giraud-Cabantous and Eugene Martin. The rest of the field was made up of local machinery, which included ERAs and Altas.

Have a nice day.

Answer 2

pick any of the following

King George VI, princess Elizabeth, Princess Margaret, and Earl & Lady Mountbatten

they were all there.