Grace Dieu Manor is a 19th-century country house near Thringstone in Leicestershire, England, now occupied by Grace Dieu Manor School. It is a Grade II listed building.
The house is named after the adjacent Grace Dieu Priory, a priory founded in 1240 by Roesia de Verdun for fourteen Augustinian nuns and a prioress . It was dissolved in 1540 and granted to Sir Humphrey Foster, who immediately conveyed it to John Beaumont (fl. 1550), Master of the Rolls, who made it his residence.
The descent in the Beaumont family was as follows:
Sir Ambrose Phillips (1637–1691) purchased the estate following the death of the 3rd and last Beaumont baronet in 1686. Phillips demolished most of the priory church in 1696. On the death of his eventual successor in 1796 the estate passed to his cousin Thomas March, who adopted the surname Phillips in lieu of his patronymic.
In 1833, Charles March Phillips gave the manor of Grace Dieu to his son, Ambrose Lisle March Phillips, following his marriage. Ambrose had converted to Roman Catholicism at an early age, and was an enthusiast for monasticism. His biographer Edmund Sheridan Purcell says his father had been "anxious to see him married and settled lest his religious fervour should induce him to make vows of celibacy, which he often spoke of as the highest life, and follow up by entering the cloister or ranks of the secular clergy" The old priory buildings having fallen into ruins, he set about building a new house to a design in a "Tudor" style by the London architect William Railton. It was built on higher ground, about 300 yards south of the priory ruins. There was a chapel attached, later enlarged by A.W.N. Pugin.
In 1842 Phillips built another chapel, to Pugin's designs, about a mile from the house and set up a cross, 17 feet (5.2 m) tall, on a rock he named the Calvary. Between the chapel and the cross was a series of fourteen shrines, each containing a representation of a scene from Christ's passion. At the foot of the rock he built a village school, dedicated to St Aloysius. In around 1846, Pugin also added the mansion's east wing and stable court gateway. Sir Banister Fletcher made alterations in around 1900.