Robert FitzEdith, Lord of Okehampton (1122–1172) was an illegitimate

Legitimacy (law)

At common law, legitimacy is the status of a child who is born to parents who are legally married to one another; and of a child who is born shortly after the parents' divorce. In canon and in civil law, the offspring of putative marriages have been considered legitimate children...

 son of Henry I of England

Henry I of England

Henry I was the fourth son of William I of England. He succeeded his elder brother William II as King of England in 1100 and defeated his eldest brother, Robert Curthose, to become Duke of Normandy in 1106...

 and Edith Forne

Edith Forne

Edith Forne was an English noblewoman who was the concubine of King Henry I of England and the foundress of Osney Abbey in Oxford.She was the daughter of Forn Sigulfson, Lord of Greystoke, Cumberland.Edith had two children by King Henry:...

, who was one of Henry's many mistresses. Compared to his illegitimate siblings and half-siblings, much is known about him. Robert married Matilda d'Avranches—widow of William de Courcy—and together had one daughter, Mary, who married Renaud, Sire of Courtenay

Renaud de Courtenay

Renaud de Courtenay was a nobleman of Sutton, Berkshire, England.He was the son of Miles de Courtenay and Ermengard de Nevers....

 (son of Miles, Sire of Courtenay and Ermengarde of Nevers

Ermengarde of Nevers

Ermengarde de Nevers was the daughter of Renaud II, Count of Nevers and Auxerre, and of Ida de Forez.She married Miles de Courtenay , son of Jocelin de Courtenay and Isabel, daughter of Guy I of Montlhéry....

). Robert died of natural causes

Death by natural causes

A death by natural causes, as recorded by coroners and on death certificates and associated documents, is one that is primarily attributed to natural agents: usually an illness or an internal malfunction of the body. For example, a person dying from complications from influenza or a heart attack ...

.