List of Famous people named John

John Komnenos, later surnamed Tzelepes, was the son of the sebastokrator Isaac Komnenos and grandson of the Byzantine emperor Alexios I Komnenos. As a young man he followed his father during his exile and wanderings across Asia Minor and the Levant, when for a short time he was married to a daughter of Leo I, ruler of Armenian Cilicia. After the reconciliation between his father and his uncle, Emperor John II Komnenos, in 1138, he returned to the Byzantine court, but defected in the next year to the Danishmendid Turks during a siege of Neocaesarea. From there he moved to the court of the Sultan of Rum, one of whose daughters he married. According to later, and likely invented, tradition, the Ottoman dynasty hailed from one of his offspring.

John Nugent Fitch was a British botanical illustrator and lithographer, best known for his contribution of 528 plates to The Orchid Album, a landmark work of eleven volumes published between 1872 and 1897. Fitch was the nephew of botanical artist Walter Hood Fitch (1817–1892). Fitch also contributed to Curtis's Botanical Magazine from 1878, joining a select group of illustrators such as William Kilburn, James Sowerby, Sydenham Edwards, William Jackson Hooker and Walter Hood Fitch. Fitch also produced plates for Lepidoptera Indica by Frederic Moore.