SUNDAR SIṄGH, BHĀĪ (1881-1921), one of the Nankāṇā Sāhib martyrs, belonged to Nizāmpur Devā Siṅghvālā, near Dhārovāli in Sheikhūpurā district. His original name was Sudh Siṅgh. He was the son of Bhāī Chandā Siṅgh Kamboj and Māī Hukamī and was born in July-August 1881, at their ancestral village Nizāmpur in Amritsar district. The family had shifted as colonizers to Sheikhūpurā district during the mid-1890's. Sudh Siṅgh took the vows of the Khālsā at Srī Akāl Takht, Amritsar, and received the new name of Sundar Siṅgh. He attended the Dhārovālī conference on 1-3 October 1920 and participated in the liberation of Gurdwārā Kharā Saudā on 30 December the same year. He also joined Bhāī Lachhmaṇ Siṅgh Dhārovālī's jathā for the liberation of the Gurdwārā Janam Asthān at Nankāṇā Sāhib and fell a martyr to the bullets of the opponents of reform on the morning of 20 February 1921.