There was an eighth son of an eighth son.
SOURCERY SEES THE RETURN OF RINCEWIND AND THE LUGGAGE AS THE DISCWORLD FACES ITS GREATEST - AND FUNNIEST - CHALLENGE YET.. a wizard squared...a source of magic...a Sourcerer.
And then he had an eighth son...
However (for reasons we\'d better not go into), he had seven sons.
He was, quite naturally, a wizard.
There was an eighth son of an eighth son