2 But all things did conveniently purvey:

conveniently > befittingly, appropriately; suitably purvey > provide

3 It fortuned (so time their turn did fit)

turn > purpose

4 A band of Britons, riding on foray

A > [That a] foray > [a] raid

5 Few days before, had gotten a great prey

Few > [A few] prey > booty, plunder

6 Of Saxon goods, amongst which was seen 7 A goodly armour, and full rich array,

armour > [suit of armour] full > exceedingly