The Golgi apparatus is the only cell organelle to be named after a scientist. The visible characteristics of the organelle were first reported by Camillo Golgi (1843-1926) at a meeting of the Medical Society of Pavia on 19 April 1898 when he named it the ‘internal reticular apparatus’.
Debate about the existence of the apparatus continued even after 1913 when the term ‘Golgi apparatus’ was officially given to the ‘internal reticular apparatus’. It was not until 1954 that work in electron microscopy finally put the seal of approval on the existence of the organelle and the eponym ‘the Golgi’, was fully accepted.
(https://bscb.org/learning-resources/softcell-e-learning/golgi-apparatus/)