Robert FitzRoy
Robert FitzRoy was born at Ampton Hall, Ampton, Suffolk, England, into the upper echelons of the British aristocracy and a tradition of public service. Through his father, General Lord Charles FitzRoy, Robert was a fourth great-grandson of Charles II of England; his paternal grandfather was Augustus Henry FitzRoy, 3rd Duke of Grafton. His mother, Lady Frances Stewart, was the daughter of the first Marquess of Londonderry and the half-sister of Viscount Castlereagh, who became Foreign Secretary. From the age of four, Robert FitzRoy lived with his family at Wakefield Lodge, their Palladian mansion in Northamptonshire.
John FitzRoy, 9th Duke of Grafton
FitzRoy was the eldest son of William FitzRoy, Viscount Ipswich (himself the eldest son of the 8th Duke of Grafton and his first wife, Margaret Rose Smith) and his wife Auriol Margaretta Brougham, and was educated at Trinity College, Cambridge. When his father died in a flying accident in April 1918 and when his great-grandfather died in December 1918, John FitzRoy became the heir to his grandfather's titles and succeeded to them in 1930.