The earliest extant deed of the priory is one of 1199, whereby L., prior of St Winwaloe, with the consent and advice of his brother, Remigius, abbot of Monsterol, granted a toft and eleven acres to Robert de Stradesete.
In 1336 she conveyed the manor and lands of the priory to the abbot and convent of West Dereham on the condition that he would find a chaplain to say daily mass in the chapel of St Winwaloe for the souls of Gilbert, earl of Clare, and of Elizabeth and her ancestors and heirs forever.
At the dissolution the manor of Winwaloe, late belonging to the abbey of Wereham, came to the crown, and was granted to Thomas Guybon and William Mynn.
Moulded ashlar eaves cornice below gabled roof with 19th-century internal end stacks carrying twin octagonal gault brick flues.
North elevation with 12th-century string course at first floor, flat central buttress and remains of annulated engaged column to right.
19th- and 20th-century casements, gabled slate roof and ridge stack right of centre with paired octagonal gault brick flues.