The 4th-century historian Aurelius Victor saw Hadrian's withdrawal from Trajan's territorial gains in Mesopotamia as a jealous belittlement of Trajan's achievements ("Traiani gloriae invidens"). More likely, an expansionist policy was no longer sustainable; the empire had lost two legions, the Legio XXII Deiotariana and the "lost legion" IX Hispania, possibly destroyed in a late Trajanic uprising by the Brigantes in Britain. Trajan himself may have thought his gains in Mesopotamia indefensible and abandoned them shortly before his death. Hadrian granted parts of Dacia to the Roxolani Sarmatians; their king, Rasparaganus, received Roman citizenship, client king status, and possibly an increased subsidy. Hadrian's presence on the Dacian front is mere conjecture, but Dacia was included in his coin series with allegories of the provinces. A controlled partial withdrawal of troops from the Dacian plains would have been less costly than maintaining several Roman cavalry units and a supporting network of fortifications.