Who was the English Bishop of London sometimes known as Lupus who wrote the recensions collectively known as "Recensions B"?
Collectio canonum Wigorniensis The Collectio canonum Wigorniensis (also known as the "Excerptiones Ecgberhti" or as "Wulfstan's canon law collection") is a medieval canon law collection originating in southern England around the year 1005. It exists in multiple recensions, the earliest of which — "Recension A" — consists of just over 100 canons drawn from a variety of sources, most predominantly the ninth-century Frankish collection of penitential and canon law known as the "Collectio canonum quadripartita". The author of Recension A is currently unknown. Other recensions also exist, slightly later in date than the first. These later recensions are extensions and augmentations of Recension A, and are known collectively as "Recension B". These later recensions all bear the unmistakable mark of having been created by Wulfstan, bishop of Worcester and archbishop of York, possibly sometime around the year 1008, though some of them may have been compiled as late as 1023, the year of Wulfstan's death. The collection treats a range of ecclesiastical and lay subjects, such as clerical discipline, church administration, lay and clerical penance, public and private penance, as well as a variety of spiritual, doctrinal and catechistic matters. Several "canons" in the collection verge on the character of sermons or expository texts rather than church canons in the traditional sense; but nearly every element in the collection is prescriptive in nature, and concerns the proper ordering of society in a Christian polity.
Sermo Lupi ad Anglos The Sermo Lupi ad Anglos ('The Sermon of the Wolf to the English') is the title given to a homily composed in England between 1010-1016 by Wulfstan II, Archbishop of York (died 1023), who commonly styled himself "Lupus", or 'wolf' after the first element in his name ["wulf-stan" = 'wolf-stone']. Though the title is Latin, the work itself is written in Old English. The "Sermo Lupi" is Wulfstan's most well-known work. In it, he blames a lack of moral discipline amongst his fellow English as the source of God's anger against the English, which has taken the shape of thirty years of Viking raids against England. Wulfstan exhorts the English to behave in a manner more pleasing to God, and specifically to live according to the laws of the Church and of the king. The "Sermo Lupi" is noted for its rhetorical achievements, and is considered to represent the height of Wulfstan's skill as a homilist and rhetor. The text of the "Sermo Lupi" has been critically edited many times, most recently by Dorothy Bethurum. The work contains one of several mentions of Old English "wælcyrian", a term cognate to the Old Norse "valkyrjur"—valkyries.