The Priory of Our Lady was established in 1430 for a group of Carmelite friars from Landskrona. It was one of three religious houses founded in Helsingør by King Erik VII as it grew from a small fishing village to a trading port on the Kattegat, the strait which separates Zealand from Skåne, an important fishing ground and busy shipping corridor between the North Sea and the Baltic. Erik VII, the heir of Margaret I, needed funds and his new toll on shipping was a source of steady income. He wanted to impress outsiders and set about purposefully to develop Helsingør as a gateway city. One of the things he did was to establish in the town not only the priory for the Carmelites but also a Franciscan friary and a Dominican priory.