Several emperors and popes made unsuccessful attempts to reclaim the area but all, including the one which Bombelli acted as consultant on for Pope Pius IV, came to nothing. [It was not until 1928 that the Pontine Marshes were finally drained.]
Ilang emperors at papa ginawa nabigo pagtatangka upang tubusin ang lahat ng mga lugar ngunit, kabilang ang isa na Bombelli acted bilang consultant sa para sa Pope Pius IV, nagmula sa wala. [Ito ay hindi hanggang 1928 na ang Pontine Marshes ay pinatuyo sa wakas.]