Jahiz
Yes. The best-known historical bearer is the 9th-century writer Amr ibn Bahr al‑Jāḥiẓ, a documented Abbasid-era author whose works survive and are cited in medieval sources.
Al‑Jāḥiẓ literally denotes someone with prominent or bulging eyes; it was originally a descriptive nickname that became associated with the famous writer.
No. Jahiz is not a Quranic name; references to al‑Jāḥiẓ occur in literary and bibliographic literature rather than in scripture.
It is rare as a modern given name but historically attested; families wishing to use the name often do so to evoke literary heritage linked to al‑Jāḥiẓ.
Al‑Jāḥiẓ was known for prose on literature, theology, natural history, and rhetoric; his works are cited in medieval bibliographies and manuscript catalogs.