I live in the Tower of London, and my husband is a Yeoman of the Guard, Queen's Bidy Guard, Gentleman inextraodinar, (Beefeater). The term Beefeater has many origins, it is mainly used as a derogatory term, dating back from when the Yeoman were given free reign of the Monarch's table to fill theor dagger with as much meat as they liked, hence 'here come the beefeaters'. The other origin is that the Monarch wanted his body guard to be fit and strong and so made sure that they had the best cuts of beef to eat. I hope that this helps you.