The castle of Ascot Doilly appears from documentary sources to have been put up c. 1129–50. Excavation in 1946–7 of a small mound on this manorial site showed that it had contained a stone tower 35 ft. square which had been built up from the natural surface of a 4-ft. rise of Lias clay protruding through the gravel of the Evenlode valley bottom. Round this tower, as it was raised, had been piled a low mound of clay; thus the impression of a tower on a mound was created. Beside it are remains of a bailey and contemporary paddocks. The tower had been deliberately demolished, probably c. 1180.
The excavation thus revealed a new principle in smaller defensive building of the period, a mound piled round a stone tower. It also yielded a useful series of mid- to later twelfth-century pottery and other objects, and evidence of domestic window glass in the twelfth century.
There are remains of thirteenth-century and later buildings in the bailey area. The village of Ascot represents a dual holding, with two mound-and-bailey castles at opposite ends 800 yds. apart, and between them the church (with twelfth-century work). There is also evidence of pottery-making in the village, at least in the early thirteenth century.