About the Two Sicilian Kings:
Ferdinando I: Re Nasone, due to his nose, as Jonnydep1 as written, but also Re Lazzarone, due to his closeness to napoletan lower classes, also called Lazzaroni
Ferdinando II: Re Bomba (King Bomb), because in 1848 he sent a naval flotilla to shell the sicilian city of Messina
Francesco II: Re Lasagna or Lasa due to his love for this dish, but also he is well known as Franceschiello
mafan you are correct, king ferdinando / ferdinand I was also known as re lazzarone. this was due to the fact of his father becoming the king of spain, he renounced the throne of naples in his favor (aged only eight) and left him behind in naples under the regency of one mr b. tanucci. well the regent neglected the young kings education and instead of studying the king was left in the company of the palace servants etc, so that he grew up to speak with the dialect of the lazzaroni.............
you are also correct concerning his namesake, he was nicknamed " king bomba" and his son was also nicknamed "bombino" ( a pun of bamdino meaning son of king bomba, i think) as well as franceschiello......whatever that means ?