Who was the English Bishop of London sometimes known as Lupus who wrote the recensions collectively known as "Recensions B"?
Collectio canonum Wigorniensis:  These later recensions are extensions and augmentations of Recension A, and are known collectively as "Recension B". Wulfstan (died 1023): Wulfstan (sometimes Lupus; died 28 May 1023) was an English Bishop of London, Bishop of Worcester, and Archbishop of York.
Wulfstan