The name Elvira has its origins in the Spanish and Portuguese languages, derived from the Germanic elements "alf" meaning "elf" or "supernatural being" and "wair" meaning "true" or "trustworthy". It emerged during the medieval period and was particularly popular in the Iberian Peninsula.

The earliest recorded use of the name dates back to the 9th century, with references found in various historical documents from the region. One notable figure bearing this name was Elvira of Castile, a princess who lived in the 10th century and played a significant role in the political affairs of the Kingdom of León.

In the realm of literature, the name Elvira has been featured in several works, including the play "Don Juan Tenorio" by José Zorrilla, where it is the name of one of the main characters. This play, written in the 19th century, contributed to the popularity of the name in Spanish-speaking countries.

Among the notable historical figures who bore the name Elvira are Elvira Madigan, a Danish tightrope walker and circus performer from the late 19th century, who gained notoriety for her tragic love story. Another famous Elvira was Elvira Casati, an Italian heiress and muse to artists and writers in the early 20th century, known for her eccentric lifestyle and fashion choices.

In the realm of entertainment, the name Elvira has been associated with Elvira, Mistress of the Dark, the stage persona of American actress and comedian Cassandra Peterson, who rose to fame in the 1980s with her horror-themed comedy show.

Other notable individuals named Elvira include Elvira Nabiullina, the current Governor of the Central Bank of Russia, born in 1963, and Elvira Ramírez, a Mexican activist and social worker who fought for the rights of indigenous communities in the mid-20th century.