The name Eloy has its origins in the French language, deriving from the Old French name Eloi or Loy, which in turn comes from the Late Latin name Eligius. This Late Latin name can be traced back to the Gallo-Roman saint Eligius, who lived in the 7th century AD.

Eligius was a highly skilled metalworker and became the patron saint of goldsmiths, blacksmiths, and other metalworkers. He was also a counselor to Dagobert I, the Merovingian king of the Franks, and later became the Bishop of Noyon-Tournai.

The name Eloy was particularly popular in France during the Middle Ages and was adopted in other European countries as well. Some notable historical figures who bore the name Eloy include:

1. Eloy d'Amerval (c. 1100-c. 1165), a French poet and trouvère from Picardy.
2. Eloy de Crequy (c. 1395-1475), a French nobleman and military commander during the Hundred Years' War.
3. Eloy Pruystinck (c. 1490-1564), a Flemish painter and sculptor from Oudenaarde.
4. Eloy Gonzalo (c. 1542-1615), a Spanish Jesuit missionary and explorer in the Philippines.
5. Eloy Alfaro (1842-1912), an Ecuadorian military leader and politician who served as President of Ecuador from 1895 to 1901 and from 1906 to 1911.

While the name Eloy has its roots in French and Late Latin, it has been adopted and used in various forms across different cultures and languages over the centuries, reflecting the influence of the saint Eligius and the significance of metalworking in many societies.