sentences:  In his judicial capacity, Lyon frequently dealt with cases concerning the aboriginal population and worked closely with the tribal chiefs in the area.Such was the mutual respect, between himself and the chiefs, that Lyon was able to attend a tribal meeting to face down the young warriors who had encouraged killing the white settlers and joining the North-West Rebellion.The power struggle between federal and provincial government had worsened since Lyon's arrival in the district, as Premier Oliver Mowat faced opposition from Prime Minister John A. Macdonald and his Conservative ministry.