Henri IV de Sully

[1] Sully was an adviser to King Philip IV of France at the end of his reign, and tutored Phillip's younger son Count Philip de Poitiers.

Sully played a key role in the administration of the kingdom by becoming Treasurer of France.

He also played a key diplomatic role, participating in the reconciliation between Philip V and his cousin Robert III of Artois.

[2] He was sent as an ambassador to Westminster by Charles IV, to arrange the marriage of his daughter with the eldest son of the King Edward II of England.

Sully appears to have found favour with Edward II and was appointed Seneschal of Gascony in 1325–26.

Arms of the Lords of Sully: Azure, a semé of mullets and a lion rampant or.