Legh, his father’s eldest illegitimate son, had succeeded him as head of the family and from 1808 bore their arms. The rental of his estates was estimated in 1824 at £27,000.
Claughton’s bankruptcy in March 1824 embroiled Legh in a number of legal actions. He was sued early in 1825 for the £3,500 value of a bill of exchange drawn on him in 1821 by Claughton, which the attorney-general Sir John Singleton Copley*, representing him, successfully contended had come into the plaintive (Usher’s) hands by fraudulent means.
Legh died at Milford Lodge, Lymington, Hampshire in May 1857, having bequeathed the family estates to his nephew and heir Captain William John Legh (1828-98) of Lyme, Conservative Member for South Lancashire, 1859-65, and East Cheshire, 1868-85, who in 1892 was created Baron Newton. He left his second wife, for whom he established a trust, the rents of his leasehold properties and his personal effects, including jewellery, to the value of £1,373, and created separate trusts for his daughter and her son.
