Page "Stamford, Lincolnshire" Paragraph 6

The Romans built Ermine Street across what is now Burghley Park and through the middle of the town, where it forded the Welland, eventually reaching Lincoln ; they built a town to the north at Great Casterton on the River Gwash.

In AD 61 Boudica followed the Roman 9th Legion ( Legio IX Hispana ) across the river.

The Anglo-Saxons later chose Stamford as their main town, being on a more important river than the Gwash.