16th Century Thinkers

What's means the 16th century thinkers?

In my memory, The Thinkers is a bronze and marble sculpture in paris. It is magnum opus of Auguste Rodin and often used to represent philosophy.The Thinkers depicts a man in sober meditation battling with a powerful internal struggle.

The important problem is Rodin made a first small plaster version around 1880, it's 19th century, Not 16th century.

Why so many people are searching the 16th Century Thinkers?