Who was the first English footballer to be Knighted while still a player?

Sir Stanley Matthews (Born in 1915 Matthews is considered by many to be one of the greatest players to have ever played the game. He was a fast and skillful player who was nicknamed The Magician. Matthews played at the top level until the age of 50. He is the oldest player to play in the top division of English football at the age of fifty years and five days)