Kāmrān Mirzā,

http://www.chiefacoins.com/Database/Countries/Mughal.htm

[... Sher Shah defeated Humayun in the battle of Kanauj in May 1540 and became the new ruler of northern India. He ordered Humayun to leave India. Humayun went back to Kabul but Kamran was unwilling to hand the city over to his brother. At this point Kamran went behind Humayun's back and offered to support Sher Shah, if the latter would give him the Punjab in return. His offer was refused. At this point Humayun was urged by his advisors to put his brother to death, but he refused.

After a series of disastrous attempts to retake his throne, Humayun crossed the Indus in 1543. Rather than welcoming him, Kamran sent his younger brother Askari out to catch him and bring him to Kabul. Humayun managed to escape his brother's clutches though and sought refuge in the court of the ruler of Persia, Shah Tahmasp I.

When Humayun was in Persia, Kamran offered the Shah the city of Kandahar if he would hand his brother over to him. Shah Tahmasp favoured Humayun in this fraternal squabble however, and provided him with troops with which he defeated Kamran. Humayun was able to enter Kabul in November 1545 in a bloodless takeover, as Kamran's rule had been oppressive, and the population of the city was keen to be rid of him.

After his ignominious flight, Kamran managed to retake Kabul twice but he remained a hated figure to the residents of the city, as his periods of rule involved atrocities against large numbers of them.

Following his third and final ejection from Kabul, Kamran went to the court of Humayun's enemy, the Afghan king Islam Shah in Delhi in 1552, where he was effectively rebuffed in his hopes for an alliance against his brother. Islam Shah arrested him and deputed his trusted adviser Hemu to hand over Kamran to Humayun at Kabul.]... Although Humayun resisted the pressure to put his rebellious brother to death, he was persuaded that something needed to be done about him so he reluctantly had him blinded. Humayun then sent him off to perform the Hajj to Mecca, where he died in 1557.]

ref :https://en.wikipedia.org/wiki/Kamran_Mirza#:~:text=Kamran%20Mirza%20(1509%20%E2%80%93%205%20(,to%20Babur's%20wife%20Gulrukh%20Begum.