Shortly after he came of age, the young Richard Mytton entered into an unpleasant case in the Chancery Court, where he accused his grandfather of committing waste on the estate in the felling of timber worth £3,200.

Particularly important to this was a trust deed of February 1827 which gave full control of the estates to Mytton's former college friend, Viscount Clive, later Edward Herbert, 2nd Earl of Powis.

Her son, Richard Herbert Mytton now took up the estates following a distinguished career in the Bengal Civil Service, which he relinquished a year earlier.

[11] His affairs appear to have been managed by his friend, Lord Clive, but, with the immediate crisis over and presumably in much straitened circumstances, he returned to England by 1818, when he was admitted to St. John's College, Cambridge.

[12] He left for India in February 1827 and in this year the Revd Richard Mytton, late of Garth, now of Calcutta, East Indies had to make over further lands to the commissioners of taxes in consideration of a large sum of money owed to Crown.

[13] Mytton died in February 1828, and there is a memorial in Guilsfield Church describing him as chaplain of Barrackpore, Bengal and to the Governor General of India.

Pennant in 1796 commissioned John Ingleby to produce a watercolour of the old house at Garth, which presumably he intended to use as an illustration for a future edition of the Tour in Wales.

This watercolour, which is now in the collections of the National Library of Wales, appears to be the only surviving depiction of the old hall, shown on a hill in the wooded countryside.

[15] Ingleby's watercolour shows that a new house had been placed in front of earlier buildings, possibly timber-framed, of the Wynn family.

[16] The rebuilding of Garth commenced in 1809, although Richard and Charlotte Mytton, inspired by Loudon's Treatise on Forming, Improving and Managing Country Residences of 1806, may have been imagining and planning a new house even before his grandfather died in May 1809.

The architect was John C. Loudon,[17] and he published an initial elevation and plan in his 1812 publication Observations on laying out Farms in the Scotch Style, adapted to England.

[21] The ground plan of these stables was designed by us (Loudon) in 1809 for the late Col. Mytton of Garth, Montgomeryshire; and it is proper to observe the principal object in view was, to provide accommodation for breeding and breaking of a superior description of riding horses.

The situation on which these stables were placed was the summit of an elevated knoll, protruding from the side of a hill; and their effect was remarkably good from all the surrounding country.

The elevation actually executed from our design was different from either of those now given (figs 1702 and 1703), and, we need not say, much inferior; the later having been suggested and sketched for us by Barry, and prepared for the engraver by Mr Lamb.

[23] The Garth stables were circular, 84 ft in diameter, with triangular merlons, ogee windows again, and with an external covered passage (with cast-iron stations) all round, where horses – even with carriages - could be exercised out of the rain.