 The Romans had to worry about the Brigantes rising again, so they built a string of forts before Hadrian's Wall. Hadrian's Wall is 122 CE. This is about 95. This fort was built in 85 CE following Emma's very careful reporting. And somewhere between 95 and 110, somewhere in there, with Trajan, emperor now, because Domitian, who is not successful as the last of the Flavians, wanders off. He's probably assassinated.