Humphrey II de Bohun (died 1164/5) of Trowbridge Castle in Wiltshire and of Caldicot Castle in south-east Wales, 4th feudal baron of Trowbridge,[1] was an Anglo-Norman nobleman, the third generation of the Bohun family settled in England after the Norman Conquest of 1066.
Together with his widowed mother he founded the Cluniac priory of Monkton Farleigh in accordance with his father's wishes.
In the civil war during Stephen's reign Humphrey sided with his rival, the Empress Matilda, after she landed in England in 1139.
He repelled a royal army besieging his castle at Trowbridge, and in 1144 Matilda confirmed his possessions, granted him some further lands, and recognised his "stewardship in England and Normandy".
By Margaret he had issue including: He died sometime before 29 September 1165, and was succeeded by his son Humphrey III de Bohun.