 Few traces survive and the site is protected as a scheduled monument.It was the seat of a junior branch of the Stewart family, known as "Stewart of Bonkyl", from which was descended in another junior branch "Stewart of Darnley", the paternal family of King James I & VI of Scotland and England.Excepting the motte on which it stood, and a small section of curtain wall there is little left of the structure of what was once a very powerful castle of enceinte.