The clan can trace its origin to Fulbert, a vassal knight of Walter fitz Alan from Oswestry, Shropshire, England.

Fulbert's sons were granted land in Renfrewshire for the service of their father, a knight to Walter fitz Alan,[2] reconfirmed in a charter in 1157 by Malcolm IV.

The family name is retained in placenames such as Pollok, Pollokshields and Pollokshaws, all situated to the south side of the River Clyde, between Glasgow city centre and Paisley.

The church of Pollock was given to the monks of the Priory of Paisley in 1163 by Petrus de Polloc, eldest son of Fulbert.

John de Polloc was a signatory to the Ragman Rolls subscribing allegiance to King Edward I of England in 1296.