Note 24 — Chapter III · INDEPENDENT RULE, 1087-95
Reading edition
The Anglo-Saxon Chronicle (a. 1087) and Florence of Worcester (ii, p. 22) make the positive statement that the revolt broke out after Easter (16 April); but we know from a more reliable source that William Rufus took the first active measures against the bishop of Durham on 12 March, and it is clear that the rebellion was already under way at this time. De Iniusta Vexatione, in Simeon, Opera, i, p. 171; cf. p. 189.