In 1431 Sir James Schaw of Greenock, Comptroller to the King, acquired the lands of Sauchie when he married the heiress Mary de Annand. Sauchie Tower was built by Sir James soon after. His son was appointed Governor of Stirling Castle in 1460. The Schaws held the land into the 17th century, with several members of the family serving in the Scottish royal household.
Around 1631, Alexander Schaw, who was knighted by King Charles I in 1633, built a house in the courtyard to the north-west of the tower. Another house on the estate, Schawpark, was built around 1700, and in 1752 Sauchie passed by marriage to the Cathcart family. Around this time the tower is thought to have been gutted by fire, and was not subsequently lived in. The roof and turrets were destroyed in the second half of the nineteenth century. Old Sauchie House, in the courtyard, was demolished after the estate was bought for coal extraction in the 1930s. The tower was derelict but in good condition in 1950. Schawpark was sold in 1826, to the Earl of Mansfield, who was then Lord Lieutenant of Clackmannanshire, but was demolished in 1961.
Today the tower is restored. It measures 11.5 by 10.3 metres and rises four storeys to a corbelled parapet walk, with bartizans (open round towers) at the corners. At the north-west corner is a hexagonal cap house (a small room covering the top of the stair), with a pyramidal roof. The vaulted basement contains a well, and the main hall is at first-floor level.
References:The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.