I’m glad things are turning up Callum! I just think Cal and Brooks are a fantastic sibset. Handsome, laid-back, earthy, while still a little stately - like old money English boys who roll up their cuffs to splash about in the creek.
I agree with you on the commonness of John, but it does have great flow as a middle for Callum.
What would you think of Callum Jack? It would be a great way to honor a John, while making the name his own. I think it sounds lovely as a combo, and it feels closer in style to Callum and Brooks. Also fits your 2-1-3 cadence.
Suggestions to honor a Charles:
Callum Ari
Callum Arlo
Callum Chase
Callum Harley
Suggestions to honor a James:
Callum Ames
Callum Hamish
Callum Jameson
Callum Jem
Callum Seamus
Other suggestions to honor a John:
Callum Evan
Callum Hans
Callum Ian
Callum Ivan
Callum Jackson
Callum Jens
Callum Jensen
Callum Jonty
Callum Sean
Callum Zane