What would you name a brother to [name_f]Phoebe[/name_f] and [name_u]Leo[/name_u]?
Names being considered: [name_u]Adrian[/name_u], [name_m]Abel[/name_m], [name_u]Amos[/name_u], [name_u]Benjamin[/name_u], [name_m]Damon[/name_m], [name_m]Eben[/name_m], [name_m]Gideon[/name_m], [name_m]Hal[/name_m] (Henry), [name_m]Jacob[/name_m], [name_m]Maximilian[/name_m], [name_m]Samuel[/name_m], and [name_u]Rocco[/name_u].
I think [name_f]Phoebe[/name_f], [name_u]Leo[/name_u] and [name_u]Adrian[/name_u] sound good together!
[name_m]Maximilian[/name_m]!
Otherwise, I’d go with one of these:
[name_u]August[/name_u]
[name_m]Bastian[/name_m]
[name_m]Caspar[/name_m]
[name_m]Magnus[/name_m]
[name_m]Otis[/name_m]
[name_u]Remy[/name_u]
[name_u]Atlas[/name_u]
[name_m]Rafael[/name_m]
[name_u]Jasper[/name_u]
[name_m]Xavier[/name_m]
[name_m]Roman[/name_m]
[name_m]Orson[/name_m]
[name_m]Dashiell[/name_m]
[name_u]Jude[/name_u]
[name_u]Miles[/name_u]
[name_m]Soren[/name_m]
[name_m]Jacob[/name_m] would be lovely with [name_f]Phoebe[/name_f] and [name_u]Leo[/name_u]! 
I think I like [name_u]Adrian[/name_u] the most with [name_f]Phoebe[/name_f] and [name_u]Leo[/name_u].
[name_u]Max[/name_u], [name_m]Samuel[/name_m] and [name_m]Abel[/name_m] are great with [name_f]Pheobe[/name_f] and [name_u]Leo[/name_u]!
[name_m]Gideon[/name_m] was the first one that popped into my mind of seeing the post title, so glad to see it on your list!! I also like [name_u]Amos[/name_u], [name_u]Adrian[/name_u], [name_m]Eben[/name_m] and [name_m]Samuel[/name_m] for you!!
With [name_f]Phoebe[/name_f] and [name_u]Leo[/name_u], I’d also consider…
[name_u]Callum[/name_u]
[name_u]Jude[/name_u]
[name_u]Rory[/name_u]
[name_f]Erza[/name_f]
[name_u]Owen[/name_u]
[name_u]Jonah[/name_u]
[name_u]Evan[/name_u]
[name_m]Isaac[/name_m]
[name_u]Elliot[/name_u]
[name_u]Maxwell[/name_u]! [name_f]Phoebe[/name_f] was our top choice if this bean was a girl, and [name_u]Leo[/name_u] is one my DH loves. We’re using [name_u]Maxwell[/name_u] this time. [name_m]Maximilian[/name_m] is also great! What sold me on [name_u]Maxwell[/name_u] & [name_f]Phoebe[/name_f] were the nicknames [name_u]Max[/name_u] & [name_f]Bee[/name_f] together.
love gideon & amos with those two!
[name_u]Adrian[/name_u]!
[name_m]Gideon[/name_m], [name_u]Amos[/name_u], & [name_u]Rocco[/name_u] are favorites on your list
[name_f]Phoebe[/name_f], [name_u]Leo[/name_u], ______:
[name_m]Dashiell[/name_m]
Ansel/Anson
[name_u]Jensen[/name_u]
[name_m]Magnus[/name_m] “Gus”
[name_u]Cecil[/name_u]
[name_m]Darius[/name_m] “Rhys”
[name_u]Dorian[/name_u] “Rory”
[name_m]Orson[/name_m]
[name_u]Corbin[/name_u]
[name_u]Tate[/name_u]
[name_u]Dustin[/name_u]
[name_m]Malcom[/name_m]
[name_m]Duncan[/name_m]
[name_m]Winston[/name_m]
[name_u]Jonah[/name_u]
[name_u]Nolan[/name_u]
[name_u]Remy[/name_u]
[name_u]Kyler[/name_u] “Kai”
[name_m]Abner[/name_m] “Abe”
[name_u]Callum[/name_u]
[name_u]Harland[/name_u] “Hal”
I love [name_m]Abel[/name_m] and [name_u]Amos[/name_u] with [name_u]Leo[/name_u] and [name_f]Phoebe[/name_f]
[name_u]Leo[/name_u], [name_f]Phoebe[/name_f] and…
[name_u]Max[/name_u]
[name_m]Jeremy[/name_m]
[name_u]Blair[/name_u]
[name_u]Dean[/name_u]
[name_m]Ted[/name_m] / [name_u]Teddy[/name_u]
[name_m]Warren[/name_m]
[name_u]Quincy[/name_u]
[name_u]Jonah[/name_u]. From your list, I like [name_m]Gideon[/name_m], [name_u]Henry[/name_u] “Hal”, and [name_m]Maximilian[/name_m] most.
[name_m]Gideon[/name_m]
Henry nn Hal 
Gideon
These are my personal faves! So sweet and strong. I especially adore the “eo” / “oe” pattern continuing in Gideon! That’s really special. A fantastic name that just so happens to fit the theme perfectly. So subtle and a lovely tie-in to three siblings. x
As been said I really like the subtle ‘eo/oe’ theme so [name_m]Gideon[/name_m] would be my top choice. But style wise is say [name_m]Maximilian[/name_m], [name_u]Amos[/name_u] and [name_u]Adrian[/name_u] also fit.
[name_f]Phoebe[/name_f] and [name_u]Leo[/name_u] both derive from Greek so I would be tempted to continue the theme
[name_f]Phoebe[/name_f], [name_u]Leo[/name_u] and…
[name_m]Theodore[/name_m]
[name_m]Xander[/name_m]
[name_u]Zephyr[/name_u]
[name_m]Nicolas[/name_m]
[name_m]Nikolai[/name_m]
[name_u]Orion[/name_u]
[name_m]Alexei[/name_m]
[name_m]Alexander[/name_m]
[name_m]Apollo[/name_m]
[name_m]Andreas[/name_m]
[name_m]Sebastian[/name_m]
[name_m]Evander[/name_m]
[name_m]Perseus[/name_m]
Maxwell was actually the first name that came to my mind before I opened this thread!
Phoebe, Leo & Maxwell sounds fantastic 