The term "Apocrypha" refers to a collection of ancient texts that are not included in the canonical versions of the Hebrew Bible but are found in certain versions of the Septuagint (Greek translation of the Hebrew Scriptures) and are recognized by some Christian denominations. The Apocrypha includes a variety of writings, such as Tobit, Judith, Wisdom of Solomon, Sirach (Ecclesiasticus), Baruch, and 1 and 2 Maccabees, among others. The texts in the Apocrypha were not written by a single unknown author but by various authors over a span of centuries. These texts were preserved and passed down through generations, and their authorship is often attributed to figures from ancient Jewish history, such as prophets, sages, and historical figures. If you are referring to a specific book titled "The Apocrypha" with an unknown author, it's possible that you're thinking of a modern compilation or publication that presents a selection of the Apocryphal texts along with introductions, annotations, or commentary. In such a case, the authorship would be associated with the editors, compilers, or translators who put together the collection and provided accompanying materials.