W. G. Grace
From Tardis Wiki, the free Doctor Who reference
W.G. Grace was a famous cricketer in the early 20th century. Sir Robert Muir compared the Fifth Doctor to him after a cricket game at Cranleigh Hall. Sir Robert referred to him as the Master, which momentarily confused the Doctor for a moment, as he believed that he was talking about his enemy with the same name. (DW: Black Orchid)