He was a friend of BhaIIshar Singh of Nishanarivali misl, father of Akali Phula Singh. Ishar Singh was mortally wounded in an action in which the Shahid sardars had also participated. As he lay dying, he en trusted his two infant sons to the care of Naina Singh, who took the family to Damdama Sahib and gave great attention to bringing up the children. Phula Singh, the elder of the two, grew up into a firebrand Nihang who later distinguished himself as jathedar of the Akal Takht at Amritsar and as commander of Maharaja Ranjit Singh`s crack Akali brigade.
Akali Naina Singh is also credited with introducing the tall pyramidal turban common among the Niharigs to this day, and is said to have been an adept in kirtan, the Sikh devotional music. In a gurudwara at Bharpurgarh, a village near Amroh in Patiala district, are displayed a few garments and the wooden frame of a musical instrument believed to have once belonged to Akali Naina Singh who had retired to this village in his later life.
1. Gian Singh, Giani, Twarikh Guru Khalsa[Reprint]. Patiala, 1970
2. Hoti, Prem Singh, Akali Phula Singh. Ludhiana, n,d