Raja Dhian Singh was the longest serving wazir of the Sikh Empire, during the reign of Maharajah Ranjit Singh, and four of his successors. He held the office for twenty five years, from 1818 up till his death. Dhian Singh was a brother of Raja Gulab Singh of Jammu, who later founded the Dogra dynasty when he became Maharaja of the princely state of Jammu and Kashmir under the British Raj. Another brother Suchet Singh also served the empire. The three brothers were collectively known as the "Dogra brothers" in the Sikh empire, based on their ethnicity.

Maharaja Sir Duleep Singh, GCSI, or Sir Dalip Singh, and later in life nicknamed the "Black Prince of Perthshire", was the last Maharaja of the Sikh Empire. He was Maharaja Ranjit Singh's youngest son, the only child of Maharani Jind Kaur.