The Berkeley family is nearly unique in English history in that it has to this day an unbroken male line of descent from a noble Saxon ancestor before the Norman conquest of England in 1066 and also retains possession of much of the lands it held from the 11th and 12th centuries, centred on Berkeley Castle in Gloucestershire, which still belongs to the family.
The Berkeley family descends in the male line from Robert Fitzharding (d.1170), 1st feudal baron of Berkeley, Gloucestershire, reputedly the son of Harding of Bristol, the son of Eadnoth the Constable (Alnod), a high official under King Edward the Confessor.
Berkeley Castle, the caput of the barony, and the adjoining town of Berkeley are located in the county of Gloucestershire and are situated about five miles west of Dursley and eighteen miles southwest of Gloucester, and northeast of Bristol. The location has conferred various titles on the family over the centuries, including Baron Berkeley (barony by writ), Earl of Berkeley, and Marquess of Berkeley.
Berkeley Castle was originally granted by William the Conqueror to the Norman Roger de Berkeley, feudal baron of Dursley, under the feudal tenure of fee-farm. However, this Norman family, which had recently taken its name from its tenure of Berkeley Castle, was stripped of its tenure by King Henry II (1154–1189) shortly before he became king. The tenure was re-granted to his supporter and financier the Anglo-Saxon Robert Fitzharding (d.1170), of Bristol, as a feudal barony.