mindymae's list "Bryton's Little Bro" of 3 great name ideas: Larkin - Cormac!

Bryton's Little Bro

The additional syllable makes Lark a masculine surname name, borne by poet Philip Larkin.

Larkin

Brecken is a fresh, distinctively Irish alternative to similar-sounding (and much more popular) Beckett or Beckham. While Brecken is a spelling variation of the original Breccan, it's the most popular form of the name. By whatever spelling, it's a name we'll likely see rise in popularity.
 Spelled Breckin, it's the given name of actor Meyer, known for Road Trip and Rat Race.

Brecken

Both offbeat and upbeat, this evocative traditional Irish name that runs through Celtic mythology is known here via award-winning novelist Cormac McCarthy (born Charles). The author's adopted name is related to Cormac Mac Airt, one of the great legendary high kings of Ireland.
 In two of the Harry Potter movies, Cormac McLaggen is a Gryffindor student.
 
A popular choice in Northern Ireland where it made the Top 100 in a recent year, it is also familiar in Ireland (where it last ranked in 2017) and England and Wales where it was given to 26 boys in a recent count. 
 Despite cool nickname Mac, it has never made it onto the US Top 1000, though it has been used by a solid 150 boys in each recent year.