The Rock of the Lion is not a history of the siege of Gibraltar, although the story of that immortal siege of 1779-83 has been closely studied and followed in preparing this book for young readers. The writer has used the romancer's just and inalienable right to introduce real persons and events whenever it would be of service to the story. Only one liberty has been taken with chronology; it refers to Paul Jones, and is unimportant in character.