Maximilian III
With support of Maximilian III, Archduke of Austria, and no opposition from Philip III of Spain, Ferdinand II managed to win the Bohemian and Hungarian crowns in 1617 and 1618, respectively. This placed Ferdinand in a strong position to win any future election for Holy Roman Emperor. On 20 May 1618, Klesl, who continued to promote a Catholic-Protestant rapprochement, was arrested by Ferdinand II and Maximilian III.