Names That Mean Merry

Succinct and to the point, Joss may appeal to those who enjoy the likes of Jude, Jesse, Jem, and Ozzy. Brought into the spotlight by Joss Whedon , creator of Buffy the Vampire Slayer, Angel and various Marvel movies, it has never been hugely popular in the US, given to a small handful of babies each year -- though recent controversy surrounding the filmmaker may put future parents off.
 
Derived from Jocelyn, referring to an Old Germanic tribe, or from the Biblical Joseph, it nevertheless could make a cool, one-syllable option for boys.

Joss

Merilee and Merrilee were early respelled or word names, ahead of their time in some ways. Merrilee hit the Top 1000 for a couple of years in the 1940s, but last year no baby girls were given either version of the name in the US, which makes it more appealing.

Merilee

All the names ending in-lyn seem sadly dated. 

Names That Mean Merry

The names

Joss

Merilee

Merilyn