What is the most infamous case of compulsive hoarding?

One of the most infamous cases of compulsive hoarding was the Collyer brothers. In the 1920s, they were found dead in their Harlem brownstone buried in a heap of books, newspapers, furniture, musical instruments, and rotting garbage. Newspapers of that time referred to them as eccentric hermits. Today they would likely be diagnosed with a debilitating mental health condition called compulsive hoarding, the uncontrollable impulse to collect, save, or resist discarding objects.