The House of FitzRoy is a noble family in England, known for its historical significance and connections to the British monarchy. The family descends from Charles FitzRoy, the illegitimate son of King Charles II and his mistress, Barbara Villiers. The FitzRoys held the title of Duke of Grafton and played important roles in British politics and society. Throughout history, members of the House of FitzRoy have served in various governmental positions, including Prime Ministers and Lords. The family is also associated with the FitzRoy River in Australia, named after Admiral Robert FitzRoy, who was a prominent figure in the 19th century and known for his work in meteorology and exploration.