Just as in knowing the true authorship of books, so in sculpture it matters much to know who did what.
Here's a report from Rome on a wooden sculpture of Christ, dated from ca. 1495.
Michelangelo, Schaeffer, and the Kingdom of Washington
Pizza With Michelangelo
Plagiarism: Pretend People, Fake Work
What Is a Plagiarist?
Oxford, Cambridge, Plagiarism, and Christian Worldview
I'll Take Sartre