Who reformed royal administration, such as William de Ros, during his rein as King?
William de Ros, 1st Baron de Ros: William de Ros or Roos, 1st Baron de Ros of Helmsley (c. 1255 – 6 or 8 August 1316), was one of the claimants of the crown of Scotland in 1292 during the reign of Edward I. Edward I of England:  He spent much of his reign reforming royal administration and common law.
i don't know