The surname Bella derives from the Latin personal name Bellus, meaning “beautiful,” “graceful,” “pleasant,” or “charming.” The authors agree that it originated as an auspicious given name, bestowed with positive wishes for a child’s future, and later became a hereditary surname.

According to F. Miranda, Bellus was a favorable and celebratory name frequently chosen for newborns. He also notes that in some cases the surname may represent an apheretic form of longer names such as Isabella or Annabella, created through the loss of the initial syllable.

E. Rossoni documents the medieval personal name Bello and cites a reference found in the biography of Dante written around 1400 by Leonardo Bruni, known as the Aretine, where “Geri di messer Bello,” a relative of the poet, is mentioned. This evidence confirms the use of the name in Late Medieval Italy before its stabilization as a surname.

F. De Laurentiis associates the surname with related forms such as Bèlli, while R. Brondolo emphasizes its auspicious character and notes that, in some areas of northern Italy, particularly Piedmont and Lombardy, it could also have developed as a matronymic surname, transmitted through the maternal line.

Regarding its distribution, F. Miranda identifies Sicily as the principal area of concentration, with the surname present throughout the island and especially common in the provinces of Catania, Messina, and Palermo. The surname is also found in Piedmont, Lombardy, Liguria, Lazio, Veneto, Emilia-Romagna, Sardinia, and Calabria. Rossoni likewise records important clusters in northwestern Italy.

Taken together, the available interpretations point to an origin rooted in the Latin name Bellus, whose meaning conveyed beauty, grace, and good fortune. The surname may also, in some cases, reflect shortened forms of longer personal names, but it consistently preserves the positive and auspicious character associated with its original meaning.