There's a lot of confusion with George

He was reputed to be a Turkish soldier in the Roman army

He was martyred in similar circumstances to St Albans, but in the Holy land in the very early day of christianity & hence made an early Saint

The English connection is that during the Crusades near on 1000 years later his ghost was alleged to have turned up at a number of key battles - normally when the crusaders were losing - with his appearance - troops would rally & victory would result

So he was a sort of mascot of the Crusaders - hence the mix up with knights & thing - Richard the lionheart etc started it all

El Cid used the same trick in Spain with St James (Santiago) who turned up fighting the Moors after his dead body had somehow floated about the Mediteranean on a cruise