It was he who inspired Sant Gurmukh Singh of Patiala (1849-1947) to take up karseva (cleaning, construction and reconstruction projects at Sikh shrines with free voluntary labour) as his life`s mission. As Sant Sham Singh grew too old to go to Harimandar, his devotees built in 1911 a gurdwara for him in the Ata Mandi sector of Amritsar. They called it Dharamsala Sant Sham Singh, but he changed the name to Dharamsala Sn Guru Nanak Devji Dasan Das Sham Singh (dasandas literally meaning slave of slaves). He died of pneumonia on 23 April 1926 at the great age of 123.
References :
1. Prem Singh, Major, Jivan Sant Baba Sham Singh. Amritsar, n.d
2. Balwant Singh, Giani, Agam Agadh Purakh Shriman Pujya Sant A tar Singh Ji Maharaj Mastuane Valian da Sampuran Jivan Charittar. Mastuana, 1983