Guillermina

Meaning & origin

Guillermina is the Spanish feminine form of William, a name with deep Germanic roots meaning 'resolute protector.' It entered Spanish via the Visigoths and has been used for centuries in Spanish-speaking cultures, though it has always been less common than its masculine counterpart, Guillermo. In the United States, data from the Social Security Administration shows that its peak year was 1973, meaning the highest recorded usage occurred in that decade, specifically the 1970s. The name first appeared in U.S. records in 1918, and its recent trajectory has been stable, neither surging nor declining dramatically. Because it is so closely tied to the more familiar Guillermo, it fits into a category of feminine names ending in -ina that feel both classic and slightly formal, appealing to families seeking a traditional name with a distinguished sound. While not among the most popular choices today, Guillermina carries a sense of heritage and strength, drawing on its long history in the Spanish-speaking world.

Guillermina is the Spanish feminine form of Guillermo, itself derived from the Germanic name Wilhelm, composed of 'wil' (will, desire) and 'helm' (helmet, protection). The name entered Spanish through the influence of the Visigoths and later spread across the Spanish-speaking world. It has been used since the Middle Ages, though it never reached the popularity of its masculine counterpart.