The Rocky Island is a novel written by Samuel Wilberforce a 19th-century British author and clergyman. Samuel Wilberforce was better known as a prominent figure in the Church of England during the Victorian era particularly for his involvement in theological controversies and his advocacy for the church's position on various social and moral issues. However there seems to be confusion regarding the authorship of The Rocky Island. Samuel Wilberforce did not write a novel with this title to the best of my knowledge. It's possible that there might be an error or misunderstanding in the information provided. If The Rocky Island exists it might be authored by another individual or it could be a lesser-known or obscure work. Without further details it's challenging to provide accurate information about the book. If you have additional context or if there might be any mistakes in the details provided please feel free to share and I'll do my best to assist you further.