sumpter

A sumpter horse or mule; beast of burden.

From The Bible in Spain - Vol. 2 [of 2] by George Henry Borrow

This, however, is on the supposition that there are a few sumpter horses loaded with provisions, as is generally the case when the party is a large one.

From Life of Schamyl And Narrative of the Circassian War of Independence Against Russia by John Milton Mackie

She had also two sumpter mules richly caparisoned, and carrying a fine bed and all the necessary implements for cooking.

From The Exemplary Novels of Cervantes by Miguel de Cervantes Saavedra

I happened to finish first, and, hearing the horses' hoofs, went out and watched the lads who were to be our guides fastening the baggage on the sumpter beasts.

From The Story of Francis Cludde by Stanley John Weyman

All our gallant soldiers had made up their lances, fusils, sabres, bows and arrows, into bundles, which were packed upon their sumpter animals. 

From Travels in Tartary, Thibet, and China During the years 1844-5-6 Volume 2 by Évariste Régis Huc