[1] During the ascendancy of the House of Bourbon, he held a post in the foreign office, which was due to the royalism of some of his newspaper articles (some of which were collected in his Diplomatists of Europe, his only English-translated work).
[1] He wrote biographies of Catherine de' Medici and Marie de Medici, Anne of Austria, Maria Theresa of Austria, Catherine II of Russia, Elizabeth I of England, Diana of Poitiers and Agnès Sorel—for he delighted in passing from "queens of the right hand" to "queens of the left.
[1] The general catalogue of printed books for the Bibliothèque Nationale contains no fewer than seventy-seven works (145 volumes) published by Capefigue during forty years.
[1] Capefigue was hasty, and although he had access to an exceptionally large number of sources of information, including the state papers, his accuracy and judgment are doubtful.
[1] Nonetheless, he was frequently cited by the Scottish historian Sir Archibald Alison in his highly successful History of Europe During the French Revolution.