Mohammad Shah was the third Qajar shah of Iran from 1834 to 1848, inheriting the throne from his grandfather, Fath-Ali Shah. From a young age, Mohammad Mirza was under the tutelage of Haji Mirza Aqasi, a local dervish from Tabriz whose teachings influenced the young prince to become a Sufi-king later in his life. After his father Abbas Mirza died in 1833, Mohammad Mirza became the crown prince of Iran and was assigned with the governorship of Azarbaijan. After the death of Fath-Ali Shah in 1834, some of his sons including Hossein Ali Mirza and Ali Mirza Zel as-Soltan rose up as claimants to the throne. With the support of English and Russian forces, Mohammad Shah suppressed the rebellious princes and asserted his authority.

Abbas Mirza was a Qajar crown prince of Iran. He developed a reputation as a military commander during the Russo-Persian War of 1804–1813 and the Russo-Persian War of 1826–1828, as well as through the Ottoman–Persian War of 1821–1823. He is furthermore noted as an early modernizer of Persia's armed forces and institutions, and for his death before his father, Fath Ali Shah.