The Knights of the Round Table were a legendary fellowship of British knights in the time of King Arthur, led by King Arthur himself. The term 'Knights of the Round Table' is often used to refer to the group of knights as a whole. The word 'SIRS' is an acronym for the members of the group, which stands for 'Sovereigns, Illustrious, Royal, and Sovereigns'. These knights were renowned for their courage, loyalty, and chivalry, and were known for their commitment to justice and honor.