Robert de Vaux, also known as Robert de Vallibus, (died c.1195), Baron of Gilsland, was a prominent 12th-century English noble, who served as Sheriff of Cumberland in 1175 and 1176.
Robert succeeded his father in 1165, as a confirmation of Gilsland was given to him by King Henry II of England.
Robert was required to pay forty shillings for scutage, for not participating in the Norman invasion of Ireland by Henry II.
[2][3] In 1186 he was fined a hundred marks for a variety of offences including allowing prisoners to escape.
[4] He held Carlisle against the Scottish invasion of Cumberland in 1173 and 1174 by King William I of Scotland, surrendering the castle after a second siege in 1174.