Foley artists are named after Jack Foley (1891–1967), a pioneer of film sound effects. Jack Foley is credited with inventing the "art of Foley".
There are many stories in the film industry about Jack Foley's genius, such
as the time Stanley Kubrick wanted to re-shoot a Roman army scene in Spartacus to get the sound right — instead Foley jangled a set of keys into a microphone and got the desired sound.
Jack Foley never received a single screen
credit for his work, although to be fair, neither did most other film workers during this period. Today Foley artists receive the credit they deserve and Jack has the last laugh by having them all named after him.