St Donat's Church is a Grade I listed church in Welsh St Donats. Records of 1180 describe the church as a chapel confirmed to the Abbey of Tewkesbury. By 1563 it was known to have served as a parish church for the community. In 1603 it was considered to be a chapel of the church at Llanblethian, but by 1764 it received a stipend from Queen Anne's Bounty and was described as a curacy.
The church was re-plastered in 1996; during this process, the church was stripped of its old coat of plaster, leaving the entire structure bare to stones and mortar. This became an opportunity to do further dating on the building by examining the old mortar. It was thought that the church was constructed some time in the 15th to 16th centuries. but it became apparent that the windows and doors from that time frame were inserted into older walls by examining the mortar. A chancery wall gave evidence of having two lancet windows at one time; this was an indication that at least this portion of the building was constructed in the 13th century.
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.