does the name 'tom jones' justifies with the whole book?

Eighteenth century novels were famous for naming the book after their protagonist. Stories like Tom Jones and Daniel Defoe's Robinson Crusoe were driven by their protagonist. The actual formal title of Tom Jones was The History of Tom Jones, a Foundling. The fictional "history" gives Tom Jones a certain authentic relevance to him. The "founding" relates to an orphan which relates directly to Tom Jones.