Analysis of information sources in references of the Wikipedia article "Manchu alphabet" in English language version.
Manchu: its alphabet developed in 1599 from the Mongolian alphabet, which can be traced through Old Uyghur, Aramaic, and Syriac scripts all the way back to Phoenician, the fountainhead of all alphabets.
The Aramaic Uyghur script, which was likewise largely alphabetized, inspired the Mongolian alphabet and it in turn provided the basis for the Manchu alphabet created in AD 1599.