Short answers, pulled from the story.
Muhammad Bairam Khan was born on the 18th of January 1501 in the region of Badakhshan in Central Asia. He belonged to the Baharlu Turkoman clan within the Kara Koyunlu confederation that had ruled Western Persia for decades before being overthrown by their Ak Koyunlu rivals.
Bairam Khan served as muhardar keeper of the seals and contributed greatly to the establishment of the Mughal Empire under Humayun. He accompanied Humayun during his exile in Persia and helped conquer Kandahar before serving as its governor for nine years.
At the time of Humayun's death on the 27th of January 1556 Bairam Khan led a campaign against Sikandar Shah Suri in Punjab while keeping the emperor's death secret from the public. He sent reassuring messages about the emperor's recovery while having Mullah Bekasi dressed up in imperial robes to appear daily before people until Akbar was crowned on the 14th of February 1556.
Relations between Bairam Khan and Akbar grew sour due to unilateral decision-making and jealousy regarding private expenses and servants growing rich. Akbar became increasingly irritable when Bairam executed two of his favorite personal mahouts which resulted in conflict over elephant handling incidents.
Bairam was assassinated on the 31st of January 1561 at Sahasralinga Tank a religious site near Anhilwad Patan in Gujarat. A group of Afghans led by Mubarak Khan Lohani stabbed him with a dagger in the back and struck him on the head fatally wounding him before he died saying the takbir.