Its English form is derived from the Hebrew “Aharon” (אהרן) which is most likely of Ancient Egyptian origin (from “aha rw” meaning “warrior lion”; or from Aaru, a heavenly paradise). According to other theories, the name could be derived from various Hebrew roots meaning “high mountain”, “mountain of strength” or “enlightened”, or “bearer of martyrs”. The rest is just the average problems with transliteration.