Mar-Zutra II in the late 5th century CE, with his son Mar-Zutra III being denied the office and relocating to Tiberias, then within the Byzantine Empire. Mar Ahunai lived in the period succeeding Mar Zutra II, but for almost fifty years after the failed revolt he did not dare to appear in public, and it is not known whether even then () he really acted as Exilarch. The names of Kafnai and his son Haninai, who were Exilarchs in the second half of the 6th century, have been preserved. The Exilarchate in Mesopotamia was officially restored after the Arab conquest in the 7th century and continued to function during the early Caliphates. Exilarchs continued to be appointed until the 11th century, with some members of the Davidic line dispersing across the Islamic world. There are conflicting accounts of the fate of the Exilarch family in the 11th century; according to one version Hezekiah ben David, who was the last Exilarch and also the last Gaon, was imprisoned and tortured to death. Two of his sons fled to Al-Andalus, where they found refuge with Joseph, the son and successor of Samuel ibn Naghrillah. However, The Jewish Quarterly Review mentions that Hezekiah was liberated from prison, and became head of the academy, and is mentioned as such by a contemporary in 1046. An unsuccessful attempt of David ben Daniel of the Davidic line to establish an Exilarchate in the Fatimid Caliphate failed and ended with his downfall in 1094. In the 11th-15th century, families that descended from the Exilarchs that lived in the South of France (Narbonne and Provence) and in northern Iberian peninsula (Barcelona, Aragon and Castile) received the title "Nasi" in the communities and were called "free men". They had a special economic and social status in the Jewish community, and they were close to their respective governments, some serving as advisers and tax collectors/finance ministers. These families had special rights in Narbonne, Barcelona, and Castile. They possessed real estate and received the title "Don" and de la Kblriih (De la Cavalleria). Among the families of the "Sons of the Free" are the families of Abravanel and Benveniste. In his book, A Jewish Princedom in Feudal France, Arthur J. Zuckerman proposes a theory that from 768 to 900 CE a Jewish Princedom ruled by members of the Exilarchs existed in feudal France. However, this theory has been widely contested. Descendants