What was the name of Sebastian Flyte's teddy bear in the mini-series "Brideshead Revisited"?

Aloysius is Lord Sebastian Flyte's teddy bear in the novel and mini series based on Evelyn Waugh's story of Brideshead Revisited (1981 TV). Anthony Andrews and Jeremy Irons were made famous as stars of the TV adaption of Brideshead, which was filmed at Castle Howard, a stately home in North Yorkshire, England,15 miles north of York.

In the TV series, Irons was the moody, disillusioned painter Charles Ryder. His friend, Anthony Andrews, was the outwardly insouciant but desperately dissolute aristocrat Sebastian Flyte. They and the entire series popularized such English fashions as Oxford bags and terms like “spiffing” (meaning “excellent”). Also, many young men throughout England and America emulated Sebastian by toting teddy bears that they also named Aloysius.

In addition it is a fact that the model for Aloysius was Archibald Ormsby-Gore, (better known as Archie), the beloved teddy bear of Waugh's friend, English poet laureate John Betjeman. These men initially met at Oxford University.