Henry Percy (born April 1564, died 5th November 1632) was the son of the eighth Earl of Northumberland and succeeded his father, who was murdered in the Tower, in 1585. Lord Northumberland was fined and imprisoned in the Tower in consequence of an alleged complicity in the Gunpowder Plot. In 1593 he was made a Knight of the Garter, and in 1603 he was Captain of the Corps of Gentlemen Pensioners.
Northumberland was in distant remainder to the Crown of England, and at one time it was probable that his claims might be strengthened by a marriage with Lady Arabella Stuart, niece of Lord Darnley, and great-granddaughter of Margaret, elder daughter of Henry VII., but the negotiation came to nothing. The Earl was fond of scientific pursuits and was known as "The Wizard Earl," and was a great smoker. The badge of the silver crescent was used by the Percy family generally and not exclusively by any particular member of it.
PETTY, WILLIAM FITZMAURICE, MARQUIS OF LANSDOWNE
Arms.—Within the Garter. Quarterly.
1st and 4th; erm., on a bend az., a magnetic needle pointing at a Pole Star or. Petty.
2nd and 3rd; arg., a saltire gu., a chief erm. Fitzmaurice.
Coronet.—That of a Marquis.
Supporters.—Two pegasi erm., bridled, crined, winged, and unguled or., each charged on the shoulder with a fleur-de-lys az.