This monument commemorates the Duke of Albany, the son of Queen Victoria. He resided in the nearby villa, where he also passed away.
Cannes official website (French) http://www.cannes.com/fr/cadre-de-vie/patrimoine/curiosites/memorial-saint-georges.html
Address 73 Allée du Parc Springland, 06400 Cannes, France
Coordinates 43°33'17.561" N 7°2'20.962" E