person · P0339

Rav Moshe Kahana bar Yaakov מר רב משה כהנא בר מר יעקב

Gaon of Sura for ten and a half years, after whom the academy stood two years without a head — the roster's clearest mark of mid-century crisis.

I. Who

Hebrew
מר רב משה כהנא בר מר יעקב
Era
geonim

II. When

Traditional
gaon of Sura, duration-only (10.5 years) in the Iggeret
Academic
fl. c. 820s–830s CE
Precision
unknown

III. Where

Places
Sura

V. How do we know

ClaimEvidenceConfidenceSources
"After him, Mar Rav Moshe Kahana bar Mar Yaakov, ten and a half years; and they stood two years without a gaon" — c. 820s–830s CE.
The Iggeret gives durations for this stretch but itself warns of "disputes such that one cannot rely on them" (1:127), and the durations exceed the interval between the anchored neighbors; no year anchors are assigned rather than invented.
tradition external ★★★☆☆