At the same time , some important Knight leaders had quietly approached Grand Master Workman Terence V. Powderly .
At the same time , some important Knight leaders had quietly convinced him of that many of FOTLU 's grievances were justified .
At the same time , some important Knight leaders had quietly approached Grand Master Workman Terence V. Powderly , and convinced him of that many of FOTLU 's grievances were justified .