Indeed, there are. As are Elvis sightings.
But as to the question you raised about there being a "well-known" biological/cosmological Theory of Evolution "traceable back to Darwin".... I am unaware of such a theory being proposed or entertained by scientists.
Can you please provide a citation to a mainstream peer-reviewed science journal article in which it (a "well-known" biological/cosmological Theory of Evolution "traceable back to Darwin") is discussed? Links to websites that contain seemingly ambiguous wording don't count.