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.
Edward FitzRoy
FitzRoy was the second son of the 3rd Baron Southampton and his second wife, Ismania Catherine Nugent, a granddaughter of Sir Charles Jenkinson, 10th Baronet. He came from a family with a long line of public service and was a descendant of Charles II's illegitimate son Henry FitzRoy, 1st Duke of Grafton. Through ancestor Anne Warren, the daughter of Admiral Peter Warren, he was a descendant of the Schuyler family, the Van Cortlandt family, and the Delancey family, all from British North America.