The origin of the word “Lucifer” appears to be included in a literal translation in the Latin Vulgate which (word) Wycliffe {and/or others} transliterated and included in the first English translation of the Bible (published from 1382-1395 AD).
According to Webster’s dictionary the origin and etymology of “Lucifer” is from Middle English, and is defined as 1) the morning star, 2) a fallen rebel archangel, and 3) the Devil. The word ‘lucifer’ is originally a Latin word which is literally translated as “bright, shining or clear.” It was first known to be used in English before the 12th century.
According to an article in Wikipedia under the title of “Fallen Angel,”[i] “The fall of Lucifer finds its earliest identification with a fallen angel in Origen (182-254 A. D.)… (in) the image of the fallen morning star or angel (and) was applied to Satan both in Jewish pseudepigrapha and by early Christian writers…”