Caesarea was granted to Eustace Granier (or Grenier) in 1010.[3][4] His descendants continued to rule Caesarea until it became the property of John Aleman by right of his marriage to Margaret Grenier in 1238 or 1243.[5]
The Granier or Grenier family became extinct with two brothers: Balian II (who died at Botron in 1277) and John (who died in Armenia in 1289), sons of Julian Grenier (died in 1275) lord of Sidon and his wife Euphemia, daughter of Hethum I, King of Armenia.
^Alan V. Murray in his book The Crusader Kingdom of Jerusalem: A Dynastic History 1099-1125 (2000) writes : "However, his origins can be established with a high degree of certainty. The Versus de viris illustribus diocesis Tarvanensis qui in sacra fuere expeditione identifies him as a Fleming from the diocese of Therouanne : Par belramensis, fit princeps Caesariensis / Eustachius notus miles, cognomine Gernirs. The form Gernirs is also used by William of Tyre, and seems to be a vernacular equivalent of the latin forms of Eustace’s surname which would seem to indicate an official in charge of a granarium (store-house), although as this appears to have become a hereditary surname carried on by his descendants it does not necessary reveal anything about Eustace himself. The phrase par belramensis can most satisfactorily be explained as the noun par in the sense of peer, a military office with an attached fief known in the county of Flanders from the mid-eleventh century, plus an adjective deriving from a toponym; since this must necessarily be sought in the diocese of Thérouanne it must refer to Beaurain-château (F, Pas-de-Calais, arr. Montreuil-sur-Mer) on the River Canche, which is mentioned in 723 as Belrinio super Qanchia sitas in pago Tarvaninse and in the eleventh and twelfth centuries as Belrem and castellum de Belrain. As Beaurain-Château was part of the county of Saint-Pol, held from the count of Boulogne, it is likely that Eustace was originally on crusade Count Hugh of Saint-Pol and his son Engelrand."[1]