Lady Frances FitzRoy (1780-1866) (1780–1866) Parents Elizabeth Wrottesley Augustus FitzRoy, 3rd Duke of Grafton Children Charles Frederic Octavius Spencer Francis Spencer, 2nd Baron Churchill Elizabeth Spencer Caroline Elizabeth Spencer George Spencer William Henry Spencer Augustus Spencer Robert Charles Henry Spencer Siblings Lord William FitzRoy Lord John FitzRoy Isabella FitzRoy Augusta FitzRoy Elizabeth FitzRoy Lord Henry FitzRoy Lord Charles FitzRoy Georgiana Fitzroy George FitzRoy, 4th Duke of Grafton Partners Francis Spencer, 1st Baron Churchill