“ The most remarkable of his professed discoveries was of a liquid which could prolong life, and by which he asserted he had himself lived 2000 years. After spending some time in Persia, Saint-Germain is mentioned in a letter of Horace Walpole’s as being in London about 1743, and as being arrested as a Jacobite spy and released. Walpole says: “He is called an Italian, a Spaniard, a Pole; a somebody that married a great fortune in Mexico and ran away with her jewels to Constantinople; a priest, a fiddler, a vast nobleman.” ”