Henry de Sully (died 1189) was Abbot of Fécamp and Bishop-designate of Salisbury and Archbishop-elect of York.

Although William was the eldest son of Adela and her husband Stephen, Count of Blois, he was passed over for the comital title and his younger brother Theobald became Count of Champagne on their father's death.

[1] Later in 1140, after his grandmother's death, Henry was nominated to become Archbishop of York,[5] but his election was again quashed this time by Pope Innocent II because Henry wished to hold both the abbacy of Fécamp along with the archbishopric.

[3] The seal of Henry de Sully, is oval, 70 mm, depicting a seated abbot seen from the front, holding his crosier in his right and left hands.

It shows an open book, SIGILLUM ABBATIS SANCTE TRINITATIS FICANNI, (A 8704)