 He became Lord of Monaco at the age of 9 months, upon the assassination of his father on 22 August 1523.A regent was appointed for the young Lord in the form of his uncle, Augustine Grimaldi (1482–1532).Under Honoré’s father, Monaco had been a subject of France and its King, Francis I. Augustine Grimaldi severed this relationship, and in the signing of the Treaties of Burgos and Tordesillas (1524), swore Monaco’s allegiance to Spain, and its King, Holy Roman Emperor Charles V. Monaco was therefore a protectorate of Spain, allowing the country to focus more on advancing and less on defending.