Lady Rosetta FitzRoy born 2015; daughter of Henry FitzRoy, 12th Duke of Grafton, and Olivia FitzRoy, Duchess of Grafton (b. 2015) Parents Henry FitzRoy, 12th Duke of Grafton Olivia FitzRoy, Duchess of Grafton Children Siblings Alfred FitzRoy, Earl of Euston Lord Ralph Simon Lennox FitzRoy