The given name Bronx is believed to have originated from the Dutch word "Bronck," which means "flat land" or "marshy area." This name is closely associated with the borough of Bronx in New York City, which was named after the Bronx River.

The earliest recorded use of the name Bronx can be traced back to the 17th century when Jonas Bronck, a Swedish immigrant, settled in what is now the Bronx borough. He established a farm and trading post along the Bronx River in the 1630s. The area became known as "Bronck's Land" or "Bronck's River," which eventually evolved into the name "Bronx."

One of the earliest historical references to the name Bronx can be found in the records of the Dutch West India Company, which governed the Dutch colonial territories in North America. In 1639, the company granted Jonas Bronck a land patent for the area that now bears his name.

Throughout history, the name Bronx has been relatively rare as a given name. However, there are a few notable individuals who have carried this unique moniker:

1. Bronx Dotti (1923-2021), an American singer and actor known for his roles in Guys and Dolls and The Mambo Kings.
2. Bronx Wanderers (born in the 1950s), an American doo-wop group formed in the Bronx borough of New York City.
3. Bronx Masquerade (born in the late 20th century), an American hip-hop artist and musician known for his socially conscious lyrics.
4. Bronx Bombers (nickname given to the New York Yankees baseball team in the 1920s), reflecting their powerful hitting and the team's association with the Bronx borough.
5. Bronx Zoo (opened in 1899), one of the largest metropolitan zoos in the United States, located in the Bronx borough of New York City.

While the name Bronx is not commonly used as a given name, its origins and historical significance are deeply rooted in the Dutch colonial era and the development of New York City's iconic Bronx borough.