William Kerr (died 1819) (d. 1819) Parents Lord Mark Kerr Charlotte MacDonnell, Countess of Antrim Children Siblings Mark Kerr Sidney Kerr Hugh Seymour McDonnell, 4th Earl of Antrim Lady Emily Kerr Mark McDonnell, 5th Earl of Antrim Charlotte Kerr Lady Frederica Kerr Charles Fortescue Kerr, Viscount Dunluce Lady Georgina Kerr Lady Caroline Kerr