His An Introduction to the Study of Early English History (1874) was widely read upon its release and received favourable reviews by historians.
Blaming Lord Esher for his woes, Yeatman accused him of participation with others in a "conspiracy to destroy his career", claiming "an additional 10,000 pounds for alleged slander from the bench".
[4] In his book The Gentle Shakspere: A Vindication, Yeatman attempted to prove that Shakespeare was a devout Roman Catholic whose works communicated his beliefs and who hated Queen Elizabeth.
Yeatman claimed he was being discriminated against because of his own Catholicism, and unsuccessfully sued the Saturday Review for libel.
[5] He later turned to writing on British Israelism, which due to his earlier literature success and membership of the Royal Historical Society won over many converts.