Palfrey: A riding horse prized by knights in the middle ages (not a specific breed), also known for its ambling gait.
Sumpter: A pack animal.
A lay brother, one of those who followed the train, had, for his use on other occasions, one of the most handsome Spanish jennets ever bred in Andalusia.
The saddle and housings of this superb palfrey were covered by a long foot-cloth.
Another lay brother led a sumpter mule, loaded probably with his superior's baggage.Quotations from: