John Keats (31 October 1795 – 23 February 1821) was a male human and noted poet of the 19th century.
In 2267, James T. Kirk quoted a portion of the poem “The Second Coming” by Keats: “Somewhere ... a shape with lion body and the head of a man is moving its slow thighs. ... And what rough beast, its hour come round at last, slouches toward Bethlehem to be born.” (TOS novel: The Joy Machine)
Commodore B6 Blue, "Bishop", quoted Keats' Hyperion to Spock while trying to convince him to leave the USS Enterprise and join him at "The Yard" in 2268. (TOS - Constellations short story: "Devices and Desires")