More on Rosabelle from Infoplease:

• Rosabelle - Rosabelle The favourite palfrey of Mary Queen of Scots. (See Horse.) “I could almost swear I ...
• Dictionary of Phrase and Fable: R - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "R"
• Horse - Horse The public-house sign. The White Horse. The standard of the Saxons, and therefore impressed ...