Complex sentence: Monastic writers of the time accused Stigand of extorting money and lands from the church, and by 1066, the only estates richer than Stigand's were the royal estates and those of Harold Godwinson.
Split into simpler sentences: Monastic writers of the time accused Stigand of extorting money and lands from the church. By 1066, the only estates richer than Stigand's were the royal estates and those of Harold Godwinson.