Alonso is the Spanish and Portuguese diminutive version of Alfonso, itself deriving from an old Germanic name "Adalfuns" meaning "noble and ready." Although the Italian spelling Alonzo is more popular in the US, Alonso has its own strong history. 


Alonso Quijano was the real name of Don Quixote — and the name of two characters in the Judy Garland musical Meet Me in St. Louis. It is also the surname of star Formula 1 driver Fernando Alonso.

Alonso

Strong, attractive, and stylish, Amara is a true multicultural choice enjoying some popularity in both the US and the UK. In the US Top 1000 since the turn of this century, Amara has been holding steady in the rankings between overly popular and obscure.
 
Amara is the Italian word for bitter, from the same root as Mary and Miriam. It has separate roots in West Africa as a name that means "grace" in the Igbo language. These two meanings are the best-known, but Amara is also a Sanskrit name meaning "immortal", an Arabic word meaning "tribe" and a Mongolian name meaning "peaceful".

Amara

Andressa

Apolonia

Aurelio is an energetic Italian name rarely heard here, with an attractive aura. As the female version Aurelia gains greater notice, we expect to hear more from Aurelio too. In fact, Aurelio has recently entered the Top 1000 in the US in 2022. Next to follow might be latinate versions Aurelius and Aurelian.

Aurelio

Avelino

In fashion limbo with Anita and Juanita. 

Benita

This name of a touristed island in sight of Los Angeles makes an attractive and newly stylish variation on the classic Catherine or overused Caitlin. 
 Santa Catalina of Siena was, along with Saint Francis, one of the two patron saints of Italy and was a respected spiritual writer of the Church. Catalina de Aragón y Castilla is the original Spanish name of the first wife of Henry VIII, known to history as Catherine of Aragon. In a completely different vein, Catalina Aruca was a character on the sitcom My Name is Earl.

Catalina

Ferdinando

One of the most attractive and unusual spins on the "Fran" franchise. 

Franca

Francisco is one of the more popular <a href="https://nameberry.com/baby-names/496/spanish-names-for-boys">Spanish names for boys</a> in the US, which is unsurprising given its popularity back in Spain and Portugal as well as Latin America, coupled with its classic status. It also has a cool hipster vibe to it, given the reputation of the city of San Francisco.

Francisco

This name of a renowned Apache leader and mystic would be a difficult choice, since it was used as a rallying cry in so many old westerns and by paratroopers jumping out of their planes in World War II. 

Geronimo

More dramatic, worldly, and energetic spin on Gregory. 

Gregorio

Isolina

Jeronimo

Portuguese form of Magdalena or Madeleine

Madalena

This is a Spanish variation of Maximilian that has begun to gain some popularity. It has a luxurious feel -- maybe it's the suggestion of "millions"? -- but this is one of those <a href="https://nameberry.com/baby-names/161/spanish-names">Spanish baby names</a> that come with Anglicized nicknames that can make it work across cultures.

Maximiliano

Rhythmically appealing international spin on the stiff original. 

Rodrigo

Rosalía

Seferino

Urraca was the name of many infantas and queens of several medieval Iberian kingdoms (most notably Leon). Despite its royal roots, Urraca is one of the names best left to the history books.

Urraca

Vicente 

Ysabel is the original spelling of this ever-more-popular name, though to English-speakers, the initial Y may confuse pronunciation. 

Ysabel

tgannon1423's list "Galician Names Before 1700" of 23 great name ideas: Alonso - Ysabel!

Galician Names Before 1700

The following list was taken from Galician-Spanish death records dated before 1700. I chose these names because they're generally uncommon yet usable for a modern baby. My sources included Find-A-Grave and Ancestry.com.