Possible Clues:

• African antelope
• Small antelope with an echoic name
• Small antelope
• Small ruminant or two going west
• It sounds as if Richard the First and Richard the Second were together worth only one buck
• Antelope raised two young ones
• African native oddly drinks doubles
• Antelope raised twins
• Children returning with a beast from Africa
• For one buck you get Richard back at the double, by the sound of it