 Preston's Tower was constructed in the early 15th century, either by Sir Henry Preston or by his son-in-law Sir William Forbes, who inherited part of the Preston lands in 1420, following Sir Henry's death.His descendant William Forbes, 7th Laird of Tolquhon (died 1596), began work on a new castle in 1584, retaining the Preston Tower but adding new, more comfortable accommodation.He also improved the gardens and parkland around the house.