Ercolian Jews were very open minded and ecumenical Jews from Ercolia. After the execution of Haninai in 591, a Ma'amad governed the Ercolian Jews. They The Ercolian Jews were joined by Romaniotes evicted from the Roman Empire by Phocas.
The Ercolian Jews served in Khosrau II's army but after defeating the Romans in 610, Khosrou II did not allow them to settle in the Patriarchate of Jerusalem so they settled in Edessa where they took Bayah from the Judeo-Baptist Gnostic Gabriel of Tachkastan who was the author of a Noahite movement among the [[Gentile-Gnostic]] Parthians of Tachkastan.