This man travelled incognito to Spain in an unsuccessful attempt to arrange a marriage between the English heir and the Infanta Maria, though he later arranged a match with Henrietta Maria of France.
This man's half-brother was implicated in a scandal involving a monopoly on gold and silver thread, which also involved his brother-in-law Giles Mompesson. This man rose to power after his predecessor's wife, Frances Howard, was implicated in the poisoning of Thomas Overbury. This man used the recently revived practice of parliamentary impeachment to bring down the lord treasurer, Lionel Cranfield, Earl of Middlesex, though later parliaments would twice be dissolved to avoid this man's own impeachment. This successor of Robert Carr, Earl of Somerset (*) as royal favorite personally led disastrous expeditions to Ile de Re and Cadiz while fighting simultaneous wars with France and Spain. John Felton assassinated this man before he could lead a second attempt to relieve La Rochelle. This man travelled incognito to Spain in an unsuccessful attempt to arrange a marriage between the English heir and the Infanta Maria, though he later arranged a match with Henrietta Maria of France. For 10 points, name this royal favorite who controlled power in 1620's England under first James I and then Charles I.
This man's half-brother was implicated in a scandal involving a monopoly on gold and silver thread, which also involved his brother-in-law Giles Mompesson.
George Villiers, 1st Duke of Buckingham [accept either]