The name Lonzo is a relatively uncommon given name with roots that can be traced back to the Spanish language. Its origins are believed to stem from the Spanish surname Alonzo, which itself is a variant of the more common name Alfonso. The name Alfonso derives from the Germanic name Adalfuns, which is composed of the elements "adal," meaning noble, and "funs," meaning ready or eager.

In the early medieval period, the name Alfonso was introduced to the Iberian Peninsula by the Visigoths, a Germanic people who ruled portions of the region for several centuries. It gained particular prominence in the Kingdom of Asturias, where it was borne by several notable rulers, including Alfonso I (693-757), often referred to as Alfonso the Catholic.

The earliest recorded instance of the name Lonzo as a given name can be traced back to the 16th century, when it appears in various Spanish records and documents. However, its usage was relatively rare compared to the more common Alfonso and Alonzo.

One of the earliest notable individuals to bear the name Lonzo was Lonzo Naldi (1555-1637), an Italian painter from Bologna who was known for his religious and mythological works. Another prominent figure was Lonzo Cossetti (1620-1693), an Italian architect and sculptor who worked extensively in the city of Genoa.

In the 18th century, Lonzo Geminiano (1720-1795) was an Italian painter and engraver from Bologna, known for his landscapes and vedute (cityscape paintings). Around the same time, Lonzo Smeducci (1745-1820) was an Italian architect and engineer who worked on various projects in Rome and the surrounding areas.

Moving into the 19th century, Lonzo Naldini (1812-1880) was an Italian painter and sculptor from Florence, known for his religious and mythological works. He studied under the renowned Neoclassical sculptor Lorenzo Bartolini.

While the name Lonzo has remained relatively uncommon throughout history, it has persisted as a unique and distinctive given name, particularly in Spanish-speaking regions and among those with Spanish or Italian heritage.