Sardar Nand Singh of Sangna also know as Sardar Nand Singh of Sanghania, Jat of Sekhon clan, native of village Sangna in the Amritsar Manjha, was the leader of a Sikh Confederacy, which later in 1758 came to be known as Misl Ramgarhia, after the fort Ramgarh at Amritsar, the Misls were created on Vaisakhi of 1748 at the Gurmata (Sikh national council), held at Amritsar, when Mir Mannu the Mughal Governor of Lahore Soobah was bent on trying to kill the Singh’s of Manjha, these Misls a few years later would be the master of Punjab.
In 1748 the Singh’s had also built a mud fort at Amritsar known as Ram Rauni, to defend against the Mughal soldiers of Mir Mannu. He had joined the Jatha of Bhai Khushal Singh, a Sikh Dhillon Jat of Gagobua in the Manjha near Tarn Taran, and fought like other Manjha Sikhs against the Mughal persecutions. Sardar Nand Singh had joined the Sikhs in their struggles against the Mughals, and Durrani invasions, the Manjha Singh’s in the 1750s in rural country had established their supremacy, each local Sikh Sardars collecting horsemen, and taking villages under their protection or Raakhi.
The rural Manjha country was like the wild west, with dacoitry seen as a honour among the Sikhs, coming out to loot Mughal treasures, and even the Durranis passing via Manjha on old Badhshahi road. Sardar Nand Singh Sanghania as he was known after his village of Sangna, in year 1752 battled against the Afghan Durrani invaders near Majitha north of Amritsar around same time In the year 1752 Jassa Singh (Ramgarhia), and his brothers left the service of Adina Khan Beg, and came to Amritsar joined the company of Sardar Nand Singh, and fought against the afghans invaders, and this Jassa Singh later rebuilt the fort of Ram Rauni, renaming it Ramgarh. After death of Sardar Nand Singh, Jassa Singh succeeded to chiefship of this Misl known as Ramgarhia, which the name had it’s roots to Ramgarh fort. Jassa Singh could bring into the field a fighting force of 8,000 men.