Wren

Wren is the nickname of Christopher Wrenfield, the main character of Supernatural webcomic on Webtoon, Rise From Ashes.

Wren the birdie.

This seems largely overlooked as a last name in the comments. I’m a direct descendant of Sir Christopher Wren who was the lead architect for the project to rebuild London after the Great Fire in 1666. There is a monument (doric pillar) that still stands in London for his efforts along with Robert Hooke.

There's a male character in the comic book series Children of Proteus named Wren.

This name is sometimes given in honour of Sir Christopher Wren, an English architect and astronomer, renowned for designing St Paul's Cathedral.

A famous bearer of this name - in a way - was fashion designer L'Wren Scott (April 28, 1964 – March 17, 2014). Though her birth name was actually Laura.

Rebel by Amy Tintera.

Although this appears to be used primarily as a girl's name, Wren Kingston is a male character on "Pretty Little Liars."

Wren is the baby, and the youngest child, in the comic strip Baby Blues.

Wren Stevens from the television series Even Stevens. She is the older sister of Louis. Portrayed by Christie Carlson Romano. Wren is the epitome of perfect and quite the opposite from her younger brother. Even Stevens is about them not getting along, as well as other teenage problems and things.

Ren Stevens on the tv show Even Stevens was named Ren spelled R-e-n. There was no double u W. I looked it up on IMDb to be sure, but I remember she had the letter R in her room or something. Ren can be a nickname for Renata/Renate.

Wren is Tom and Hester's only child in the books Infernal Devices and Darkling Plain which are part of the Mortal Engines quartet by Philip Reeves.

Wren is the name of the heroine in Sherwood Smith's book, "Wren to the Rescue."

A maiden being trained as a priestess in Marion Zimmer Bradley's "Avalon" series.