Sir Gowther is a relatively short Middle English tail-rhyme romance in twelve-line stanzas, found in two manuscripts, each dating to the mid- or late-fifteenth century.
But despite this saintly end, "like many other lays and romances, Sir Gowther derives much of its inspiration from a rich and vastly underappreciated folk tradition.
As he grows to be a youth, hunting becomes his favourite pastime, but as he nears adulthood he prefers to roam the land with a huge sword, terrorising everybody and in particular, the religious orders.
At the point of his sword, she admits to everything and, in a sudden change of heart, Sir Gowther resolves to travel to Rome to receive absolution for his sins from the Pope.
On three successive days, Sir Gowther, as Hob the fool, prays to God that he might be given arms to help defend the emperor's lands from the heathen hoards.
Following the sultan's death, on seeing Sir Gowther wounded on the final day of battle, the emperor's daughter, in her anguish, falls from her tower.
The most widely cited source for Sir Gowther is a late-twelfth or early-thirteenth century romance of a fictitious Norman duke named Robert de Diable, a story probably taken from legend.
Indeed, the tournament where the hero fights in disguise and claims to have been busy is a fairy tale commonplace (such as in The Golden Crab or The Magician's Horse, or in Little Johnny Sheep-Dung and The Hairy Man, where it is actual battle), and from there passed into romance.
[22] This is resolved in the tale by Sir Gowther descending to be amongst the lowest of the low, eating beneath the table with the dogs; and when at last his fortunes rise again, in the saddle of the white knight, "we are told: 'Rode he not with brag nor bost'", as though this may be significant to the author's intention.
The version of Sir Gowther in National Library of Scotland MS Advocates 19.3.1 is told in "a more vigorous and decidedly more explicit manner",[25] like a hagiography.
It is in this version alone that the burning of the nuns in their own church is referred to and the ultimate forgiveness of Sir Gowther's heinous crimes by God, through penance and contrition, carry him onwards almost to beatification.
Not only does the emperor's mute daughter come back to life to inform him that he is now one of God's children, but further miracles are later seen to occur beside his tomb; although it is only in the British Library Royal MS that Sir Gowther is actually identified with Saint Guthlac,[26] who wore animal skins and lived in a barrow, and for whom King Æthelbald of Mercia founded Croyland Abbey in Lincolnshire, England in the eighth century.