Robert Fitzroy, 1st Earl of Gloucester (before 1100 – 31 October 1147) is an illegitimate son of King Henry I of England.
He is called "Rufus" and occasionally "de Caen", he is also known as Robert "the Consul".
He is the half-brother of the Empress Matilda, and her chief military supporter during the civil war known as The Anarchy, in which she vies with Stephen of Blois for the throne of England.
