Names That Mean Lord

Probably derived from the Breton name Judoc, meaning "lord". As a first name, it's predominantly found in French-speaking African countries. As a surname, it famously belonged to former French Prime Minister Lionel Jospin (in office 1997-2002).

Jospin

The title of a Shakespeare play based on legends featuring the early Celtic King Cunobelinus, whose name derives from the Gaulish sun god Belenus.

Cymbeline

Ilesha is an unusual choice that will undoubtedly be confused with similar and far more common names such as Alicia and Elissa. 

Ilesha

Joëlle

An Italian form of expressive Hosanna, this spiritual name might appeal to those who enjoy nicknames Ozzy or Anna. Borne by a number of saints, including a 15th century Italian mystic, Osanna also appears as Ozana and Osanne in Romania and France respectively. The traditional Hosanna may work better however in English speaking countries if you want the religious expression to be obvious.
 
Osanna may also be an Old German name, used until around the 16th century. It was likely derived from the elements os meaning "God" and possibly hanna meaning "grace."

Osanna

An old Irish surname cousin of Tierney that makes an unusual and appealing Irish gender switch.

Tiernan

Intriguing Russian possibility, even though proper pronunciation would not be obvious. Ilya might be a more manageable option. 

Eelia

Ilie

Rare Scottish variant of John, with multicultural overtones. 

Gahan

Kaniel

Laird is a Scottish title for the landed gentry – it ranks just below a Baron – with a pleasantly distinctive Scottish burr that must have appealed to Sharon Stone, who chose it for her son.
 Laird Cregar was an early movie actor, known for playing creepy roles; Laird Hamilton is a famous American big-wave surfer.

Laird

In the Old Testament, this was the name of the father of the prophet Joel.

Pethuel

One of the coolest of names, thanks to legendary jazz pianist Thelonious Sphere Monk, who inherited it from his father. It has been used very sparingly since the 1960s--just a sprinkling of baby boys receive the name each year.

Monk's middle name Sphere is pretty unique too--a cousin of Cosmos and Cosmo.

Some other jazz names to consider: Bix, Ellington, Ella, Etta, Mingus, Dexter and Calloway. :

Thelonius

Tierney is a Celtic surname with a definite Irish twinkle, a name just waiting to be discovered. Though now sometimes used for girls (in the US, not Ireland), as in jazz singer Tierney Sutton, it still has plenty of masculine punch.
 Tierney, in its original Tiarnach form, was the name of several saints. It can also join the ranks of Old Hollywood names, via the haunting actress Gene Tierney. ER actress Maura Tierney is a current surname bearer.

Tierney

Traditionally spelled as Iarlaithe, Iarfhlaith, or Iarlaith, this is the English form of the regal, rugged Irish name. Familiar but distinctive in Ireland, it was given to 6 boys in a recent year, while Iarlaith entered the Top 100, given to 56 babies.
 
The name of a saint from Galway whose monastery became a center of learning, Jarlath is an undiscovered Gaelic gem with notable bearers including actor Jarlath Conroy, comedian Jarlath Regan, and footballer Jarlath Burns.

Jarlath

Zakk is an ekstra-kinetic spelling of a short form that's more and more often standing on its own, also as Zac, Zak, Zach, and Zack. This version is largely associated with musician Zakk Wylde.

Zakk

The French Jeremine is one of the softest and most modern sounding of the "JER"-starting names.  If you're naming a baby girl for Grandma Geraldine or Geri (or grandpa Jerome), consider Jeremine, which has an -een sound at the end.

Jeremine

If you think there are too many Zachs around, you can use this historic nickname for Zachariah instead, though it does have a somewhat feminine feel.

Riah

This name is connected to the Basque myth of the Basajaunak. These giant hairy woodsmen and women purportedly taught humans about agriculture, animal husbandry and ironworking and were also responsible for erecting large megaliths across the region. 

Basajaun

A name rarely heard these days, it was the moniker of several early saints.