1735, "one who lives in a swampy district," from swamp (n.). Meaning "workman who clears a lumber road through swamp or forest" is 1857, American English; meaning "all-purpose assistant in a restaurant or saloon" is from 1907.
swallow
swallowtail
swam
swami
swamp
swamper
swamp-land
swampy
swan
Swanee
swang