The name Aniello has its origins in the Italian language and dates back to the medieval period. It is a diminutive form of the Italian name Angelo, meaning "angel" or "messenger of God". The name Angelo itself is derived from the Greek word "angelos", which has the same meaning.

Aniello was particularly popular in the southern regions of Italy, especially in the areas around Naples and Campania. It was often used as a surname in these regions before becoming a commonly used first name. The earliest recorded use of Aniello as a first name can be traced back to the 13th century.

One of the earliest documented individuals with the name Aniello was Aniello Falcone (c. 1270-1345), a prominent Italian jurist and legal scholar from Naples. He was known for his contributions to the development of the Neapolitan legal system and his influential writings on civil law.

Another notable figure was Aniello Acciaiuoli (c. 1340-1416), an Italian nobleman and diplomat who served as the Governor of Naples and Calabria during the late 14th century. He played a significant role in the political affairs of the Kingdom of Naples.

In the 16th century, Aniello Falcone (1560-1622) was a renowned Italian painter and architect from Naples. He was known for his works in the Mannerist and Baroque styles, including the frescoes he created for various churches in Naples.

During the 17th century, Aniello Filomarino (1605-1676) was a prominent Italian prelate who served as the Archbishop of Naples from 1666 until his death. He was known for his efforts in promoting religious education and his charitable works.

In more recent history, Aniello Dellacroce (1914-1985) was an influential Italian-American mobster and underboss of the Gambino crime family in New York City. He played a significant role in the organization's operations during the latter half of the 20th century.

The name Aniello continues to be used in Italy, particularly in the southern regions, and has maintained its connection to the country's rich cultural and historical heritage.