The Maclaurin Trust is a group of Trustees, brought into being following the bequest of Mrs Mary Ellen Maclaurin. She died in 1971 and left funds to have an Art Gallery or Museum erected within the Royal Burgh of Ayr in memory of her husband, James Henry Maclaurin. After the building of such a place, the Trustees were to apply the rest of the Trust funds towards the upkeep of the gallery/museum and the purchase of items for a museum/gallery collection. The stable block and servant quarters adjacent to Rozelle House were converted into an art gallery in keeping with Mrs Maclaurin's bequest. The Maclaurin Art Gallery opened in June 1976, consisting of 4 galleries, which are attached via corridors to Rozelle House. The galleries are managed on a daily basis by South Ayrshire Council Museums Service and a Service Level Agreement between the Maclaurin Trust and the Council. The Maclaurin Collection today consists of one of the country's best collections of 20th- and 21st-century art. It has been built up over the years by the Trust’s Permanent Collections committee, advised by experts and supported financially by local and national grant giving bodies and enhanced by donations from the Contemporary Art Society and individual artists. The collection includes paintings, drawings, sculptures and prints acquired by commission or purchased from artists or art dealers. The emphasis is on the modern period, loosely defined as 1900 to the present. The most notable works include John Bellany, Alan Davie, Sir Terry Frost, Partick Heron, Robert MacBryde, William McCance and Bridget Riley. The collection also includes a small body of work from the 19th century previously in the possession of the Hamiltons of Rozelle House. A smaller collection of children's work also exists, being previous award-winners in the Maclaurin Art Competition.