His father Raghupat Rai nibbar was a big landlord of Khemkaran and came from a family whose ancestors held royal positions in the Moghul courts.
He was a very fierce and formidable warrior in the battle-field and could continuously wield a double-edged sword (Kharasang or Khanda) weighing over fifty Ser (about twenty kilograms)[4] He was nicknamed as Bir (Knight).
In 1721, Baba Binod Singh Trehan of the Tat Khalsa sent an invitation to the entire Sikh community all over the Punjab to gather at Amritsar on Diwali day.
The dangerous situation was averted at the Diwali occasion by the timely intervention of the Sikh Sangats (Congregations) but both factions continued to entertain anger and ill-will against each other.
Using a simplistic but well-intentioned procedure, Bhai Mani Singh was finally able to resolve the feud and restore peace among the warring factions and put the affairs of the Darbar Sahib in order in 1722.
Baba Amar Singh wielded his double-edged sword relentlessly and after having slain numerous adversaries, finally, fell dead.
However, the gory clash which occurred at the Harimandir's Parikrama between the Bandai and the Tat Khalsa would be replicated in the future as schisms would arise in the community and sometimes lead to deadly showdowns as the one involving Baba Amar Singh.