QUINTUS:Father’s not fighting at the moment. He’s building a wall for Emperor Hadrian. CORNELIA:In Rome? QUINTUS:No, here in Britannia, up north. CORNELIA:But he’s been gone for ages.
the Second Augustan Legion built this under the command of Quintus Lollius Urbicus, the Emperor's legate with praetorian powers". Urbicus was Governor of Britannia from AD138/9 to AD143.