 The Sealyham surged in popularity after the First World War in the UK and the United States . Within the Hollywood film industry , the Sealyham became a fashionable dog to own by the Hollywood elite . The terrier was owned by actors Humphrey Bogart , Bette Davies , Elizabeth Taylor , and by writer Agatha Christie . Cary Grant owned one which he named Archie Leach – Grant 's real name . Alfred Hitchcock had one of his Sealyham terriers seen in his 1941 film Suspicion . Alfred Hitchcock can also be seen at the start of his 1963 film , The Birds , walking two of his Sealyham Terriers in a cameo appearance , although he also owned a third Sealyham not featured in the movie . The British Royal Family also favoured these dogs ; King George V owned a dog named Jack . In 1959 one Sunday newspaper reported in the UK : " A notice has been posted in Clarence House and Windsor Castle giving explicit instructions that when Princess Margaret has breakfast in bed , her two Sealyhams must be brought to the room along with her breakfast tray . " These two dogs were called Pippin and Johnny , and were looked after by the Queen Mother when Princess Margaret fell ill . In the 1960s , children 's author Maurice Sendak owned a Sealyham named Jennie , which he featured in his 1967 work Higglety Pigglety Pop ! . 
