When William the Norman conquered England in 1066, he replaced most
of the native Anglo-Saxon bishops with clergy from his own Normandy.
The most conspicuous exception was Wulfstan, Bishop of Worcester
(pronounced "Wooster"), who had been a supporter of the Anglo-Saxon
King Harold, but who submitted to William after Harold's death, and
became one of the King's most trusted advisors. He is best
remembered for his opposition to the slave trade in western England.
Wulfstan, Bishop of Worcester, 1095