Which preposition to use with fulk

of Occurrences 5%

Two years later, in 1128, Henry sought by means of a marriage between the Empress Matilda and Geoffrey, the son of Count Fulk of Anjou, to secure the peace of Normandy, and provide an heir for the English throne; and Matilda unwillingly bent once more to her father's will.

Which preposition to use with  fulk