person · P0329
Rav Acha (of Sura) מר רב אחא
Gaon of Sura for half a year before Yehudai — a name and a fraction, kept because the Iggeret kept it.
I. Who
- Hebrew
- מר רב אחא
- Era
- geonim
II. When
- Traditional
- gaon of Sura c. 4516–4517 AM
- Academic
- gaon c. 756–757 CE
- Lifespan (traditional)
- ≈51 years
- Precision
- approximate
III. Where
- Places
- Sura
V. How do we know
| Claim | Evidence | Confidence | Sources |
|---|---|---|---|
| "After him, Mar Rav Acha, half a year" (c. 756 CE).
Years chained from the Iggeret's century anchor (Sel. 1000 = 689 CE) and its stated durations; the chain meshes with Yehudai Gaon's independently anchored 757–761 to within a few years. His half-year is shown as 4516–4517.
|
tradition external | ★★★☆☆ | |
| No source names his teacher. Per this atlas's succession roster, Rav Shmuel of Sura and Rav Yaakov HaKohen of Nehar Pakod held the headship of his academy during his formative window (c. 4481–4501 AM), making reception from them the likeliest reconstruction.
Derived by era-and-institution inference, not attested. The formative window is computed from this entry's schematic dates, hence the low confidence.
|
reconstruction | ★☆☆☆☆ |