Which king, who reassumed the throne upon his son's death, had in his service the Flemish-born military engineer George Prosper Verboom?
Marquis of Verboom George Prosper Verboom, also known as Jorge Próspero de Verboom (9 January 1665 in Brussels – 19 January 1744 in Barcelona, Spain), was a Flemish-born military engineer in the service of the King of Spain. On 9 January 1727, King Philip V of Spain granted him the title of Marquis of Verboom.
Ferdinand II of Portugal "Dom" Ferdinand II (Portuguese: "Fernando II") (29 October 1816 – 15 December 1885) was a German prince of the House of Saxe-Coburg and Gotha-Koháry, and King of Portugal "jure uxoris" as the husband of Queen Maria II, from the birth of their son in 1837 to her death in 1853.