Sir Roger Vaughan of Bredwardine (died 25 October 1415), also known as Roger Fychan or Roger the younger, was a Welsh gentleman, described as having possessed wealth, rank, and high respectability. Roger's seat, Bredwardine Castle, is estimated to have been a strong and formidable fortress, located on the banks of the Wye river in Herefordshire, two miles north of Moccas Court. Bredwardine Castle is thought to have furnished much of the material for the building of Moccas Court.