Ganga Singh was born on October 3, 1880, the third and youngest son of Maharaja Lal Singh, and brother to Dungar Singh. Succeeding his brother on December 16, 1888, he was initially educated privately, then at Mayo College, Ajmer from 1889 to 1894. From 1895 to 1898, he was put under the guidance of Thakur Saheb Lall Singh Ji "Churu" for administrative training, learning administrative work from that of Patwari to that of Prime Minister.