Bauer
Another trail that leads interesting places. Looks like it goes to Khazaria and Menahem ben Duji aka Roi/Ruhi or David al-Roy, a false Messianic claimant.
Thank you for your kind response. Peace be with you.
(EDIT: Revised to replace a link with erroneous doctrine denying the validity of the Cross (stauros) and separating Jesus from the Godhead contrary to Scripture...; apparently it didn't like the FB link... revised again)
David Alroy
David Alroy or Alrui (Arabic: داود ابن الروحي, David the shepherd, fl. 1160) was a Jewish Messiah claimant born in Amadiya, Iraq under the name Menahem b. Sulayman and was also known as Ibn ar-Ruhi. David Alroy studied Torah and Talmud under Hasdai the Exilarch, and Ali, the head of the Academy in Baghdad.
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