Bardney Abbey in Lincolnshire, England, was a Benedictine monastery founded in 697 by King Æthelred of Mercia, who was to become the first abbot. The monastery is supposed to have been destroyed during a Danish raid in 869. In 1087 it was refounded as a priory, by Gilbert de Gant, Earl of Lincoln, and it regained status as an abbey in 1115.
In 1537, six of the monks were executed for their role in the Lincolnshire Rising, and Dissolution followed. In the following year, the property was granted to Sir Robert Tirwhit. He retained the abbot's lodging as a house, and the cloister became a garden, though both later became ruinous along with the remainder of the monastery.
Excavations in 1909–14 revealed the layout. This can still be seen, though nothing remains to any height. Further excavations and conservation took place in 2009 and 2011. Some grave slabs and carved stones are preserved in Bardney parish church, which is dedicated to St Lawrence.
Bede relates that Bardney Abbey (which he called Beardaneu) was greatly loved by Osthryth, queen of Mercia, and in about 679 she sought to move the bones of her uncle, the very pious St Oswald there. However, when the body was brought to the Abbey the monks refused to accept it, because the Abbey was in the Kingdom of Lindsey, and Oswald, when king of Northumbria, had once conquered them. The relics were locked outside, but during the night a beam of light appeared and shone from his bier reaching up into the heavens. The monks declared that it was a miracle and accepted the body, hanging the King's Purple and Gold banner over the tomb. They are also said to have removed the great doors to the Abbey so that such a mistake could not occur again, so if someone said "do you come from Bardney?", it meant that you had left the door open.
As well as the wondrous light, other miracles were associated with the remains of King Oswald. The bones at Bardney were washed before interment and ground into which the water was poured supposedly gained great healing powers. In another tale from Bede a boy with the Ague kept vigil by the tomb and was cured. The King's heads and hands had been separately interred, for he had been dismembered in battle. A fragment of the stake on which his head had been impaled was later used to cure a man in Ireland.