Invented Boy Names

The etymology of Leontel is unclear, though it could be seen as a variation of Lionel. It has rarely been used anywhere, though it does have more French connections than anything. While the nickname Leon might seem a little dated, Leo is right on trend.

Leontel

Could be an interesting alternative to London, now that that one is firmly on the girl's side. Londo Mollari is a character from the TV show Babylon 5.

Londo

The origins of Lucentio are a bit hazy — it's possible Shakespeare invented the name for his play The Taming of the Shrew, where Lucentio ends up marrying Bianca. However, it may have been an obscure Italian variation of Lucentius, existing before Shakespeare's time.

Lucentio

Magnethia was created as a feminine name for the TV show Winx Club. As far as we know, it's never been used as a name for a child of any sex.

Magnethia

Majora's Mask was the title of a lauded Nintendo 64 game in the Legend of Zelda series, in which Majora was the main villain. The character's name was reportedly coined by the game's art director, Takaya Imamura, using Japanese characters from his own name and the title of the movie Jumanji.

Majora

Istredd is the name of sorceress Yennefer's former lover in The Witcher series, created by Polish author 
Andrzej Sapkowski. Some sources theorize that the name is related to the Scandinavian royal name Astrid.

Istredd

A character name in the Shadow and Bone book series, invented by author Leigh Bardugo. It is intended as a Ravkan form of Malcolm, meaning "disciple of St Columba".

Malyen

This name was created for the character Inojin Yamanaka from Naruto. It is close in sound to the English girl names Imogen and Innogen.

Inojin

Fanciful name created by L. Frank Baum for a character in his book Dorothy and the Wizard in Oz.

Ianu

The name of an absinthe-imitation, Herbsaint is a liqueur created and produced in New Orleans since the 1930s. It literally translates to "sacred herb," in reference to absinthe woodworm, the one absinthe ingredient it doesn't contain.
 
As far as we can tell, Herbsaint has never been used as a given name for a baby. However, Wes Anderson used it for the character Herbsaint Sazaerac in his 2021 movie The French Dispatch. Sazerac is the company that now owns the Herbsaint brand.

Herbsaint

Parents outside France may not know this name, but it slipped into the French Top 100 after Insta-celebrity couple Jessica and Thibault Garcia gave it to their son in 2019. It helps that it sounds similar to other currently popular French boy names, like Maël, Malo and Milan. Look out for his little sister Leewane's name in the charts in future years.

Maylone

Hamish spinoff created by author Suzanne Collins for her trilogy The Hunger Games.

Haymitch

Melor is the name of a Breton saint who in legend was also a prince, suggesting he was the son of a Cornish king (Mylor is the Cornish variation of the name). Melor was said to have a foot and hand made of silver,
 In addition, Melor is a historical oddity: a name composed of the initial letters of the words Marx, Engels, Lenin, October, and Revolution., created by Communist parents eager to reject traditional names for their children.

Melor

Moby, the nickname of musician Richard Melville Hall, was thanks to his ancestor Herman Melville, creator of the infamous whale.  You can imagine calling a child Moby as a cute nickname in honor of a grandfatherly Richard or Dick, but the ghost of a Dick would always follow the name around.  In Melville's classic book, Moby was an invented word whose meaning has never been firmly established, though the best scholarship calls it a fictional place name that, in the custom of whaling ships of the time, helped identify the whale called Dick.

Moby

The name of the young hero of Rudyard Kipling's The Jungle Book, who was raised by wolves (really) and becomes a genius hunter and trapper, was chosen as a middle name for their son Bronx (really, again) by rockers Ashlee Simpson and Pete Wentz. Kipling invented the name, whose first syllable rhymes with cow.

Mowgli

A recently-created Slovene name with no etymological roots. Naj debuted in the Slovenian Top 100 in 2019, when it was given to 23 baby boys. However, based on the use of Naja in Slovenia as a diminutive of Anastazija or Natalija as well as a stand alone name, Naj (and similar Nai) might have come about in a similar way, from Nikolaj or Nikolai, for example. 

A Slovene choice that periodically appears at the bottom of Slovenia's Top 100. It first appeared on the Slovenian charts in 2011, when parents started using Nal for its on-trend sounds. However, Nal has no etymological roots in Slovene.
 
Based on other Slovenian choices such as Tai, Maj, Maks, and Lan, it is likely Nal emerged as a diminutive form, possibly of Nikola or Nikolaj ("people of victory"), Nathaniel ("gift of God"), Arnold ("eagle power"), Kornel ("horn"), or Manuel ("God is with us", or as a masculine form of Natalja ("born at Christmas"). This however is all conjecture. 
 
Another possible source is from the Sanskrit Nala or Kunala, meaning "stem" and "lotus" respectively.

Further along the Dewayne, Dejuan, Daquan continuum. 

Naquan

Whether Neco is a spelling variation of the ever-more-popular Nico, pronounced NEE-koh, or an invented name all its own, it is a highly uncommon choice, given to just 5 baby boys in the US in 2021.

Neco

Samuel Beckett, inspired by the French surname Godeau, created the name Godot for his play, Waiting for Godot. Americans tend to pronounce Godot with the emphasis on the second syllable, but Beckett has said this is incorrect. The correct pronunciation is GOD-oh, with the first syllable stressed.

Godot

 start off as totally unique, but the best among them spread like wildfire (just ask Jax, Jamir, and Jiraiya).

 include Kashton, Braylen, Kason, Kyler, Raylan, Jamari, Zaiden, and Dax.

 are so well-established, you may not even know they were invented. Among the most surprising: Cedric, Percival, and Kyrie.

Many celebrities have given their sons invented names in recent years, including Anne Hathaway's son Jonathan Rosebanks, Kat Von D's son Leafar, and Adam Rodriguez's baby Bridgemont.

Many made-up boy names are a combination of trendy prefixes and suffixes, such as Bray-, Ja-, -son, and -den.

Invented and made up modern baby boy names including history, origin, meanings, and popularity. (Page 18)