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King David's sister was Ester-Ayawa-ha who had sons : A'ab-a Shewa and Awa-ya'a-Ba,obvious ancestors of Shwab and Bayoar nation,while Öster-reich itself was named after thier mother,that is Ayawa-Ester-reich.
They may have originally spoken abshwa language,variation of the Abaz'a,who came from A-Ze-'Aba.
Jews and christians read their names Tseruyah,Abishay,Yoab and Ze'eb.
Balázs Déri's view.