John IV Laskaris was a Byzantine emperor of the Nicaean Empire who reigned from 1258 to 1261. Born in İznik in 1250, he became the ruler at age seven following the death of his father, Theodore II. As the final monarch of the Laskarid dynasty, his reign preceded the reconquest of Constantinople. After the rise of Michael VIII Palaiologos, the young emperor was blinded and exiled, spending his remaining years living as a monk in Bithynia.
Life and reign
Following his father's death, John's regency was initially held by George Mouzalon before being seized by Michael Palaiologos. After Constantinople was retaken in 1261, Michael VIII ordered the blinding of the eleven-year-old John. This act rendered him ineligible for the throne, leading to his imprisonment. He lived as a monk for many years, eventually receiving a visit from Andronikos II, who sought forgiveness for his father's actions.
Veneration
The former emperor died around 1305. He was eventually recognized as a saint, and his memory was honored in Constantinople during the 14th century. He is commemorated within the Orthodox tradition.