 These acts by the bishop , and any frustration Buchan may have felt about the reappointment of his brother Robert Stewart , Earl of Fife as guardian of Scotland , may have caused him to react defiantly : in May , he descended from his island castle on Lochindorb and burned the town of Forres , followed in June by the burning of Elgin and the cathedral with its manses . It is believed that he also burned Pluscarden Priory at this time , which was officially under the Bishop 's protection . Bur wrote to Robert III seeking reparation for his brother 's actions in a letter stating : 
 These acts by the bishop , and any frustration Buchan may <a href='been_done' title='1'><mark>have</mark></a> felt about the reappointment of his brother Robert Stewart , Earl of Fife as guardian of Scotland , may <a href='been_done' title='2'><mark>have</mark></a> caused him to react defiantly : in May , he descended from his island castle on Lochindorb and burned the town of Forres , followed in June by the burning of Elgin and the cathedral with its manses . It is believed that he also burned Pluscarden Priory at this time , which was officially under the Bishop <a href='null_genetive' title='3'><mark>'s</mark></a>protection . Bur wrote to Robert III seeking reparation for his brother <a href='null_genetive' title='4'><mark>'s</mark></a>actions in a letter stating : 
These acts by da bishop , and any frustration Buchan may done felt abt the reappointment of his brother Robert Stewart , Earl of Fife as guardian of Scotland , may done caused em to react defiantly : in May , he descended from his island castle on Lochindorb and burned tdatown of Forres , followed in June by the burning of Elgin and thdaathedral wid its manses . It is believed that he also burned Pluscarden Priory at dis time , which was officially under the Bishop  protection . Bur wrote to Robert III seeking reparation for his brother  actions in a letter stating :