Rav Mar Kimoi Gaon, son of Mar Rav Achai [(and in Yuchsin in the Order of the Kabbalah of the Rame"a: Achanai)] Gaon, reigned in Pumbedita from the year 4655 for nine years and a half until 4665 [(Tzed"h). And Rash"b Yuchsin wrote he reigned in the year 29 of 848 years. What he wrote 848 years is certainly an error, for he himself wrote that Rav Yehuda his grandfather reigned in 1217, meaning the year 1217 of contracts, which is 4665, thus this accords with Tzed"h that he reigned only for nine years.

And what he wrote he reigned 29 should read 267, meaning of contracts, which is 4655. And in Sheda"k 37 b he wrote he died in 4659 - see there, for he confused his words and doubled and tripled and changed and inverted many things, top to bottom, etc. And he brought many Geonim who were not mentioned or remembered by Rash"b, Yuchsin, Raava"d, and Tzed"h. Let him go to his place completely.

Rav Kamoi was Rosh Yeshiva in Pumbedita and died in 4659. Rav Yitzchak son of Yeshi was Rosh Yeshiva in Mata Mechasia and died in 4645. They received from the Geonim in 4640. Rav Kimoi died in 4659, and after him Rav Yehuda who died in 4670, and after him Rav Kohen Tzedek who died in 4695.

And David son of Zakkai was Nasi, and after him Rav Chanina. And in Mata Mechasia, Rav Yitzchak son of Yeshi died in 4645, and after him Rav Hilai, and after him Rav Kimoi, and after him Rav Moshe, and after him Rav Shalom who died in 4685, and after him Rav Kohen Tzedek, and after him Rav Netronai who died in 4696, and after him Rav Amram son of Sheshna who sent the Siddur in his youth and died in 4708.

Rav Aharon son of Sagmara was Rosh Yeshiva in Pumbedita. Rav Nachshon son of Tzadok was Rosh Yeshiva in Mata Mechasia; they received their positions around 4400. Rav Aharon was a merchant and was not fitting, etc. and died in 4410. And Rav Nachshon died in 4416.

And after him Rav Tzemach his brother on his mother's side. And after him Rav Chiya who died in 4522, end of quote. See how erroneous it is when you compare each one mentioned according to the order of Rash"b, Raava"d, and Tzed"h].