 By contrast , the young Edward VI disliked Windsor Castle . Edward 's Protestant beliefs led him to simplify the Garter ceremonies , to discontinue the annual Feast of the Garter at Windsor and to remove any signs of Catholic practices with the Order . During the rebellions and political strife of 1549 , Windsor was again used as a safe @-@ haven for the king and the Duke of Somerset . Edward famously commented whilst staying at Windsor Castle during this period that " <unk> I am in a prison , here are no galleries , nor no gardens to walk in " . Under both Edward and his sister , Mary I , some limited building work continued at the castle , in many cases using resources recovered from the English abbeys . Water was piped into the Upper Ward to create a fountain . Mary also expanded the buildings used by the Knights of Windsor in the Lower Ward , using stone from Reading Abbey . 
