Mangal Singh`s sister Ishar Kaur was married to Prince Kharak Singh in 1815 at Amritsar. This brought the brother favours from the court. A jagir of the value of Rs 5,000 was conferred upon Mangal Singh and he was given charge of the ChunTari tract in Lahore district. Kharak Singh was so pleased with his management that he entrusted him in 1820 with the charge of all his affairs, civil and military, and gave him an enhanced jagzr of Rs 19,000 with the title of Sardar.
Mangal Singh also secured the possession of his old family village of Sirarivali, which was then held by Sham Singh Atarivala. He retained the favour of his master, though the mangcmcnt of princely estates was in 1834 transferred to Chet Singh Bajva. Maharaja Sher Singh resumed most of Mangal Singh`s original estates but granted him new ones of the value of over a lakh of rupees which he retained until 1846, when Raja Lal Singh seized them leaving him a much reduced jagir. Marigal Singh was appointed Adalati or judicial officer of the Rachna Doab by the British Resident, Major Lawrence. Marigal Singh died in June 1864.
References :
1. Sun, Sohan Lal, `Ihnddt-ut-Twankh. Lahore, 1885-89
2. Griffin, Lepcl, and C.F.Massy, Chiefs and Families of Note in the Punjab. Lahore, 1909