Saxon Chron.p.13.

Nennius, cap.
28.] These two brothers, observing the other provinces of Germany to be occupied by a warlike and necessitous people, and the rich provinces of Gaul already conquered or overrun by other German tribes, found it easy to persuade their countrymen to embrace the sole enterprise which promised a favourable opportunity of displaying their valour and gratifying their avidity.

They embarked their troops in three vessels, and about the year 449 or 450 [h], carried over 1600 men, who landed in the Isle of Thanet, and immediately marched to the defence of the Britons against the northern invaders.

The Scots and Picts were unable to resist the valour of these auxiliaries; and the Britons, applauding their own wisdom in calling over the Saxons, hoped thenceforth to enjoy peace and security under the powerful protection of that warlike people.
[FN [h] Saxon Chronicle, p.12.

Gul.Malm.p.11.