Quintus Cornelius Quadratus was a Roman senator who held a number of offices in the emperor's service.
He served as suffect consul for the nundinium July-September 147 as the colleague of Cupressenus Gallus.
[2] Although Quadratus is one of several natives of Cirta in North Africa who achieved a successful Senatorial career during the reign of Marcus Aurelius,[3] archeological evidence attests he made his home in Rome.
Water pipes recovered from the Esquiline Hill bearing the names of Fronto and Quadratus (Cornelio(rum) Front(onis) et Quadra(ti)) have been interpreted as not only demonstrating that Quadratus was the younger brother, but that both had a residence in that part of Rome.
He was legatus legionis or commander of Legio III Augusta in North Africa, which made him effective governor of Numidia.