Moshe ben Gershom (1663-1711) (known as Moshe Chafetz or Moses Gentili), was a rabbinic scholar in Venice, Italy. Born in Trieste, raised in Venice, he lived as a private tutor teaching Talmud and Midrash. He wrote poetry, and dealt with philosophy, math, and natural sciences.
(Other spelling permutations: Moses ben Gershom, Chefetz, Hefez, Hefes, and many, many others.)
A member of the prominent Chafetz family (Gentili, in Italian) of Northern Italy, he was considered a child prodigy and studied under the renowned R. Solomon Nizza.
One of his poetic works, written at age 13, is in the Venice edition of the Bible (1675-78). The poet Yomtov Valcasson wrote a poem for Chafetz's wedding to Yvonah Karbonnah (Venice, 1682). Chafetz wrote a poem for Yehuda Volterra's wedding (1683).
His portrait, in Melekhet Machashevet, was the first portrait ever published in a Hebrew book (first edition, 1710)
There's a slight difference in dates out there:
The 30th of Cheshvan date seems most reliably documented. The other two dates are "normal dates" that occur each year, so both deviations are understandable. (It's like having a birthday on February 29th; when do you celebrate?)
Contrary to modern expectations of 1700s Northern Italy, one could be accepted as a pious Jew, or even eminent rabbi, with a shaved face, long hair, and without a kippah.
Some information repurposed from Encyclopedia Judaica


Moshe Chafetz
(inside cover, Melekhet Machashevet)
Any information about Moshe Chafetz or his books is greatly appreciated; in particular, any existing translations.
Contact me at djbrook@sbcglobal.net.