He was also known as François au Grand Nez -LRB- `` Francis of the Large Nose `` -RRB- , the Grand Colas , and the Roi-Chevalier -LRB- the `` Knight-King `` -RRB- for his personal involvement in the wars against his great rival the Holy Roman Emperor and King of Spain Charles V .
Francis I of France was only referred to as Good King Frank .