About Yishaya ben Hananya, 8th Exilarch
Abarbanel – undated handwritten manuscript from the collection of the late Rabbi Shmuel Gorr, held by Chaim Freedman. Reference was made to “Elef Margaliot” 1993, Meir Wunder.
See also Dayan Family tree - Mentioned in Dayan Family Tree – “Yashir Moshe”, 1864, Moshe Dayan. http://www.davidicdynasty.org/about.php# (see link to Dayan research).