United College of St Salvator and St Leonard in the University of St Andrews

On 24 June 1747 the two colleges of St Leonard (1512) and St Salvator (1450) were "united, incorporated and erected into one College, to be at all times thereafter called The United College of Saint Salvator and Saint Leonard in the University of St Andrews'. The period immediately before the union had seen outward decay in the buildings of the university and the decline in the number of students attending. There was no fund for maintaining the fabric of the colleges, the salaries attached to the professorships were small and their teaching overlapped. Negotiations for union were begun in 1738, the main part being taken by Thomas Tullideph, Professor of Divinity at St Mary's College who became Principal of St Leonard's College in 1739.

The North Street site of St Salvator's College was chosen as the location for the United College despite the fact that the buildings must have been in a much poorer condition than those of St Leonard's. The residential quarters of St Salvator's were partially repaired but had to be largely rebuilt between 1754 and 1757. A new building was built along the north side of an enlarged quadrangle but the older east and south quarters of the old cloister court remained behind the church for the next 50 years. The college chapel was fitted up for the congregation of St Leonard's parish which moved to St Salvator's chapel in 1759. The buildings of St Leonard's College, except the chapel, were alienated. The United College remained a residential community, although this became increasingly rare until, finally, the Common Tables were discontinued at the United College in 1820.

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