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.
Otto of Bavaria Otto (German: "Otto Wilhelm Luitpold Adalbert Waldemar" ; 27 April 1848 – 11 October 1916), was King of Bavaria from 1886 to 1913. However, he never actively reigned due to severe mental illness; his uncle, Luitpold, and cousin, Ludwig, served as regents. Ludwig deposed him in 1913 a day after the legislature passed a law allowing him to do so, becoming king in his own right.