The Old Place () is a ruin of an Elizabethan manor house, built by Griffith Williams for his daughter and son-in-law Edmund Vann in 1596. It is often mistakenly called Llantwit Castle. The Williams family were successful lawyers and part of the rising minor gentry who were loathed by the Seys of Boverton and the Stradlings of St Donats. Vann was fined over £1,000 for being involved in a scuffle in central Llantwit on a Sunday which led him to take on the Sey family and seek his revenge.