née Amy Lyon or "Hart," born at Ness, Cheshire, a labourer's daughter; appeared as the Lady in the charlatan Graham's "Temple of Health," London; became the mother of two illegitimate children, and subsequently was the "geliebte" of the Hon. Charles Greville and of his uncle Sir Wm. Hamilton, whose wife she became in 1791; her notorious and lawless intimacy with Lord Nelson began in 1793, and in 1801 their daughter Horatia was born; although left a widow with a goodly fortune, she fell into debt and died in poverty (1763-1815).