Jwce's list "A-Z favourite boys names" of 3 great name ideas: Gareth - Stellan!

A-Z favourite boys names

Gareth, the name of a modest and brave knight in King Arthur's court, makes a sensitive, gently appealing choice, used more in its native Wales than anywhere else.
 The name Gareth first appeared in Malory's Morte d'Arthur, as the lover of Eluned, the brother of Gawain and nephew of King Arthur. He also appears in the Gareth and Lynette segment of Tennyson's Idylls of the King.
In the British version of The Office, Gareth is the name of the equivalent character of Dwight Schrute, and it also appeared in Four Weddings and a Funeral.
Recommended nickname: Gaz. Not recommended nickname: Gary.

Gareth

Rupert is a charming-yet-manly name long more popular in Britain (where it's attached to a beloved cartoon bear) than in the U.S. Yet we can see Rupert as a more stylish, modern way to honor an ancestral Robert.
 Rupert has been more visible in this country of late via Rupert Grint, portrayer of Harry Potter's Ron Weasley and the character Rupert Giles, mentor of Buffy in Buffy the Vampire Slayer, as well as actors Rupert Everett and Rupert Graves--not to mention media mogul Rupert Murdoch. 
 Off the US popularity lists since the early fifties, Rupert ranks high on Nameberry--at Number 170.

Rupert

Stellan is a strong, attractive, Scandinavian possible up-and-comer, known through actor Stellan Skarsgard, and his namesake, the son of Jennifer Connelly and Paul Bettany. Its trendy 'an' ending and the similarity in sound to the popular Kellen/Kellan make it all the more accessible.
 
While it sounds like it should be connected to stellar, it is more likely derived from the Old Norse stilling meaning "calm". Another possibility is from the Romanian Stelian and the Greek Stelios, meaning "pillar", or from the German stelle and stellen meaning "place, site" or "arrange". 
 
Nevertheless, it has a touch of celestial charm that is appealing to more and more American parents. In 2023, it was given to 121 boys (and 6 girls) — nearly double the number of Stellans born in the US a decade early.