why is old Windsor a famous spot?

Harris explains that,

Edward the Confessor had a palace here, and here the great Earl Godwin was proved guilty by the justice of that age of having encompassed the death of the King’s brother. Earl Godwin broke a piece of bread and held it in his hand. “If I am guilty,” said the Earl, “may this bread choke me when I eat it!” Then he put the bread into his mouth and swallowed it, and it choked him, and he died.