Michael V Kalaphates

Michael V Kalaphates (Greek: Μιχαήλ Ε΄, "Mikhaēl V"; c. 1015 – 24 August 1042) was Byzantine emperor for four months in 1041–1042. He was the nephew and successor of Michael IV and the adoptive son of his wife Empress Zoe. He was popularly called "the Caulker" (Καλαφάτης, "Kalaphates") in accordance with his father's original occupation.
Family.
Michael V was the son of Stephen by Maria, a sister of Emperor Michael IV. His father had been a caulker before becoming an admiral under Michael IV and botching an expedition to Sicily. Although the emperor preferred another of his nephews, the future Michael V was advanced as heir to the throne by his other uncle John the Orphanotrophos and the Empress Zoe. Shortly before his death, Michael IV granted Michael V the title of "Kaisar" (Caesar), and, together with Zoe, adopted his nephew as a son. Michael IV died on 10 December 1041 and Michael V was proclaimed emperor three days later by Zoe.
Reign.
Determined to rule on his own, Michael V came into conflict with his uncle John the Orphanotrophos, whom he almost immediately banished to a monastery. Michael now reversed his uncle's decisions, recalling the nobles and courtiers who had been exiled during the previous reign, including the future patriarch Michael Keroularios and the general George Maniakes. Maniakes was promptly sent back to Southern Italy in order to contain the advance of the Normans.
On the night of 18 April to 19 April 1042, Michael V banished his adoptive mother and co-ruler Zoe, for plotting to poison him, to the island of Principo, thus becoming sole Emperor. His announcement of the event in the morning led to a popular revolt; the palace was surrounded by a mob demanding Zoe's immediate restoration. The demand was met, and Zoe was brought back, though in a nun's habit. On 21 April 1042 Zoe's sister Theodora, who had been removed from her nunnery against her will, was declared Empress. In response, Michael fled to seek safety in the monastery of the Stoudion together with his remaining uncle. Although he had taken monastic vows, Michael was arrested, blinded (according to legend by future Norwegian king Harald Hardrada), castrated and sent to a monastery. He died as a monk on 24 August 1042.
Further reading.
[aged 27]