Gildas recounts how a war broke out between the Saxons and the local population – historian Nick Higham calls it the "War of the Saxon Federates" – which ended shortly after the siege at 'Mons Badonicus'. The Saxons went back to "their eastern home". Gildas calls the peace a "grievous divorce with the barbarians". The price of peace, Higham argues, was a better treaty for the Saxons, giving them the ability to receive tribute from people across the lowlands of Britain. The archaeological evidence agrees with this earlier timescale. In particular, the work of Catherine Hills and Sam Lucy on the evidence of Spong Hill has moved the chronology for the settlement earlier than 450, with a significant number of items now in phases before Bede's date.