Joseph Grimaldi was one of England’s most famous Regency-era entertainers. Sometimes he’s described as the first modern clown, because he established a lot of the hallmarks of clowning that still exist today.
Research:

SYMHC Classics: Moms Mabley
33:10

Behind the Scenes Minis: Self-talk Hoax
19:57

The Pompey Stone Hoax
35:25