Alvingham Priory was a Gilbertine priory in St. Mary, Alvingham, Lincolnshire, England.The Priory, established between 1148 and 1154, was a "double house", where religious of both sexes lived in two separate monasteries. They did not commonly communicate with one another, and there was an internal wall dividing their priory church. The superior of every Gilbertine house was the prioress, the prior being really an official of her house.