Garth was an important early gothic revival house in the township of Garth in Guilsfield in Montgomeryshire. In the 18th century it became the home of the Mytton family who had originally been Shrewsbury drapers, who derived their wealth from the Montgomeryshire woollen industry. They had settled at Pontysgawrhyd in Meifod and at Halston in Shropshire. The most famous members of the family were General Mytton, the Parliamentary Commander in the Civil War in the Marches and “Mad Jack Mytton”, the eccentric 19th-century squire of Halston. In 1809 a grandiose rebuilding scheme was started by Richard Mytton. However, this together with extravagant furnishing of the new house and reckless purchasing of surrounding farms, which culminated in the purchase of the Trefnannau estate in 1812 for £33,