This happened less than a year after the founding of "St. Martin", on June 3d 1744. At that time, the Freemasons decided not to publish a public registry of members and to keep the minutes of the Lodge a secret. The kings successor to the throne, Christian VII of Denmark had met several Freemasons on his Grand Tour of Europe during the 1760s, including Benjamin Franklin in London and Jean le Rond d'Alembert, Denis Diderot, Claude Adrien Helvétius and Baron d'Holbach in Paris. Although wanting to become a Mason himself, his deteriorated mental health meant that he was never initiated. Many of his successors however were Freemasons and held the title of Viseste Salomo Vicarius or Grand Master: Frederick VII of Denmark, Frederick VIII of Denmark and Christian X of Denmark.