Bhai Ishar Singh was the son of Bhai Kewal and grandson of Bhai Aaru Atrish (Yadav). His first name was Ishar Das. He was one of the first (five) persons who were initiated by Punj Piaray (Bhai Daya Singh, Bhai Mohkam Singh, Bhai Sahib Singh, Bhai Dharam Singh and Bhai Himmat Singh), in the presence of Guru Gobind Singh Sahib, on March 29, 1698. [These five are also known as Punj Muktay]. Bhai Ishar Singh embraced martyrdom, in the battle of Taragarh Fort (Anandpur Sahib), on August 29, 1700.
(Dr Harjinder Singh Dilgeer)