The Aramaic alphabet is ancestral to what alphabet known variously by scholars as the Jewish script?
Aramaic language Aramaic (אַרָמָיָא "Arāmāyā", Syriac: ܐܪܡܝܐ‎ , Arabic: آرامية‎ ‎ ) is a language or group of languages belonging to the Semitic subfamily of the Afroasiatic language family. More specifically, it is part of the Northwest Semitic group, which also includes the Canaanite languages such as Hebrew and Phoenician. The Aramaic alphabet was widely adopted for other languages and is ancestral to the Hebrew, Syriac and Arabic alphabets.
Judah ibn Kuraish Judah ibn Kuraish (Hebrew: יהודה אבן קריש‎ ‎ , Arabic: يهوذا بن قريش‎ ‎ ), was a North African Jewish grammarian and lexicographer. He was born at Tiaret in North Africa and flourished in the 9th century. While his grammatical works advanced little beyond his predecessors, he was the first in studying comparative philology in Hebrew, Aramaic and Arabic. He recognized that the various Semitic languages are derived from one source and that although they are different in their development, they are subject to the same linguistic laws. Judah's grammatical researches were original, and he maintained his views regardless of the "Mishnah" and the "Talmud" so he has been erroneously considered a Karaite.