Judith with the Head of Holofernes (1431–1506) by Andrea Mantegna - Public Domain Bible Painting

The Book of Judith is a deuterocanonical book, included in the Septuagint and the Catholic and Eastern Orthodox Christian Old Testament of the Bible, but excluded from the Hebrew canon and assigned by Protestants to the apocrypha. It tells of a Jewish widow, Judith, who uses her beauty and charm to cut off an Assyrian general’s head, which ends a military excursion and saves Israel from oppression.

The surviving Greek manuscripts contain several historical anachronisms, which is why some scholars now consider the book non-historical: a parable, a theological novel, or perhaps the first historical novel.

The name Judith is the feminine form of Judah.

Source