The Britons now began to entertain apprehensions of their allies, whose numbers they found continually augmenting; but thought of no remedy, except a passive submission and connivance.

This weak expedient soon failed them.

The Saxons sought a quarrel, by complaining that their subsidies were ill paid, and their provisions withdrawn;[***] and immediately taking off the mask, they formed an alliance with the Picts and Scots, and proceeded to open hostility against the Britons.
The Britons, impelled by these violent extremities, ana roused to indignation against their treacherous auxiliaries, were necessitated to take arms; and having deposed Vortigern, who had become odious from his vices, and from the bad event of his rash counsels, they put themselves under the Command of his son, Vortimer.

They fought many battles with their enemies; and though the victories in these actions be disputed between the British and Saxon annalists, the progress still made by the Saxons proves that the advantage was commonly on their side.
[* Chron.Sax.p.12.

W.Malms, p.11.