Isaac (Gaon)

Isaac (Hebrew: יצחק) was head of the Palestinian Gaonate in the 10th century.

Details
According to a fragment found in the Cairo Genizah (T-S 312.82), Isaac reigned as Gaon for two years. Gil estimates his reign to have occurred around 910-912 CE. According to the approach of Abramson and Stern, Isaac was Av Beit Din during the calendar controversy of 921.