He was born into a distinguished family, being a younger brother of the Count de Guiscard who was appointed the first French Governor of
Namur, although his right to call himself a
Marquis has been disputed. He became a
priest, but his notorious debauchery made it impossible for him to continue in that calling. He then embarked on a career as a soldier, joining his brother in a number of military campaigns, but was expelled from the French Court for a serious though unspecified offence. In revenge he joined the
Camisard rebellion against the French Crown, and when it failed he began wandering around Europe, offering his services to any foreign Court hostile to France. He arrived in England in 1705, where he attempted to interest the authorities, such as diplomat
Richard Hill, in a series of largely impractical schemes to defeat the French. Hill reported that Guiscard would be able to incite revolt among the Catholics in
Dauphiné and
Languedoc as well as provide access to a host of French agents working under
Louis XIV. He further substantiated these claims to Hill by claiming to carry a vial of poison with him in case pursuing agents of the French King found him. By 1706, he had convinced
Queen Anne's government to pay him a pension of 600 guineas as well as entertain the thought of leading an invasion of
Normandy in support of the previously mentioned uprising. To this end, he was given command of a regiment to land at Normandy and incite the revolt but the landing ultimately never took place. This, in combination with no meaningful intelligence or impact eventually led to a steady decline of Guiscard's credibility among the British court as well as a decrease in income. ==The attempt on Harley's life ==