 Increasingly, royalty preferred to stay at the Franciscan friary, between the Castle and King's Staith on the Ouse, while their staff resided at St Mary's Abbey and St Andrew's Priory in the Fishergate area.In the 15th century, York Castle, along with Nottingham Castle, was considered a key security asset in the north of England, but investment even in these castles diminished.Repairs to York Castle grew infrequent from 1400 onwards, and it fell into increasing disrepair.