sumpter

A pack animal, such as a horse or mule.

A pack-horse driver.

A pack-horse.

By extension, a porter; a man that carries burdens.

A pack; a burden.

Carrying pack or burdens on the back

The driver of a pack horse.

A pack; a burden.

An animal, especially a horse, that carries packs or burdens; a baggage horse.

the driver of a packhorse