Clearly a Catholic [name_m]Saint[/name_m] name with a good NN is what I am searching for. Third boy, and brothers go by [name_m]Augie[/name_m] and [name_m]Nash[/name_m]. [name_f]TIA[/name_f]!
My main contender is [name_m]Theodore[/name_m] [name_m]Bernard[/name_m] and I could call him teddy bear! 
I love both of your boys names! [name_m]Sebastian[/name_m] was the first that came to mind. You could use [name_m]Bastian[/name_m], [name_m]Seb[/name_m], or [name_m]Bas[/name_m] as a nick name. I love [name_m]Augustine[/name_m], [name_m]Ignatius[/name_m], and [name_m]Sebastian[/name_m] together.
Other suggestions:
[name_m]Raphael[/name_m] nn [name_u]Rafe[/name_u]
[name_m]Xavier[/name_m] nn Xav/[name_m]Xavi[/name_m]
[name_m]Dominic[/name_m] nn [name_m]Dom[/name_m]
[name_m]Alphonsus[/name_m] nn [name_m]Alphie[/name_m]
[name_m]Maximilian[/name_m] nn [name_u]Max[/name_u]
[name_m]Simon[/name_m] nn [name_u]Si[/name_u]
[name_m]Benedict[/name_m] nn [name_m]Ben[/name_m]
[name_m]Beckett[/name_m] nn [name_u]Beck[/name_u]
[name_m]Edmund[/name_m] nn [name_m]Eddie[/name_m]/[name_u]Teddy[/name_u]
Athanasius nn Athan
Squidly already mentioned some that I wanted to mention (I particularly like [name_m]Benedict[/name_m], [name_m]Sebastian[/name_m] and [name_m]Xavier[/name_m] in the sibset), but here’s a few more:
[name_m]Vincent[/name_m]
[name_m]Ambrose[/name_m]
[name_u]Francis[/name_u]
[name_u]Blaise[/name_u]
[name_m]Cosmas[/name_m]
[name_m]Gregory[/name_m]
[name_u]Constantine[/name_u] (Probably to similar to [name_m]Augustine[/name_m])
[name_u]Valentine[/name_u] (Ditto)
[name_m]Bartholomew[/name_m]
[name_m]Damian[/name_m]
[name_m]Sylvester[/name_m]
I love the suggestions of [name_m]Raphael[/name_m], [name_m]Xavier[/name_m], [name_m]Benedict[/name_m], [name_m]Sebastian[/name_m], [name_m]Vincent[/name_m], [name_m]Ambrose[/name_m], and [name_m]Gregory[/name_m]. I would also like to mention:
[name_m]Peregrine[/name_m] {[name_m]Pip[/name_m], [name_m]Pippin[/name_m], [name_m]Penn[/name_m]}
[name_m]Casimir[/name_m]
[name_m]Balthasar[/name_m] {[name_m]Baz[/name_m]}
[name_m]Samuel[/name_m]
[name_m]Christopher[/name_m] {[name_m]Kip[/name_m], [name_u]Kit[/name_u]}
[name_m]Oliver[/name_m]
[name_m]Isidore[/name_m] {[name_u]Izzy[/name_u], [name_m]Sid[/name_m]}
[name_m]Joachim[/name_m]
[name_m]Pascal[/name_m] {[name_u]Pax[/name_u], [name_u]Cal[/name_u]}
Cajetan
[name_m]Abraham[/name_m] {[name_m]Bram[/name_m], [name_m]Abe[/name_m]}
[name_m]Gennaro[/name_m] {[name_m]Geo[/name_m]}
[name_m]Solomon[/name_m] {[name_m]Sol[/name_m], Solo}
[name_m]Eleazar[/name_m]/[name_m]Eliezer[/name_m]
[name_m]Leopold[/name_m] {[name_m]Leo[/name_m], [name_u]Poe[/name_u], [name_m]Polo[/name_m]}
[name_m]Caspar[/name_m]
[name_m]Boniface[/name_m] {[name_m]Ben[/name_m], [name_m]Boone[/name_m]}
[name_m]Thaddeus[/name_m] {[name_u]Teddy[/name_u], [name_m]Tad[/name_m]}
[name_m]Lazarus[/name_m] {[name_m]Lars[/name_m]}
These remind me of your style: [name_m]Raphael[/name_m] ([name_u]Rafe[/name_u]), [name_m]Lucius[/name_m] ([name_m]Luke[/name_m]), [name_m]Maximilian[/name_m] ([name_u]Max[/name_u]), [name_m]Dominic[/name_m] ([name_m]Dom[/name_m]/[name_u]Nico[/name_u]), [name_m]Oliver[/name_m] ([name_u]Ollie[/name_u]), [name_m]Gabriel[/name_m] ([name_m]Gabe[/name_m]). Good luck!
Ooo! I’m kinda loving [name_m]Peregrine[/name_m]! Are Pipin/[name_m]Pip[/name_m]/[name_m]Penn[/name_m] the only nn?
I’ve also seen [name_u]Perry[/name_u] and [name_u]Perrin[/name_u], and I could see [name_m]Pim[/name_m] or [name_m]Pier[/name_m]/[name_m]Piers[/name_m] working too {Bonus: Bl Pier Giorgio Frassati!}. On a more adventurous note, you could use [name_m]Hawk[/name_m] or [name_u]Falcon[/name_u].
Nobody mentioned [name_m]Aurelian[/name_m]? I love [name_m]Augustine[/name_m] and [name_m]Ignatius[/name_m]! There’s also [name_m]Giovanni[/name_m] ([name_m]Gio[/name_m]), [name_m]Valerian[/name_m] ([name_u]Ryan[/name_u], [name_u]Val[/name_u]), [name_m]Roderic[/name_m] ([name_m]Eric[/name_m]), [name_m]Demetrius[/name_m] ([name_m]Demetri[/name_m]), [name_m]Artemas[/name_m] ([name_m]Art[/name_m]), and [name_m]Erasmus[/name_m]. I don’t think these have been mentioned?
Oh and how could I forget [name_m]Magnus[/name_m], my favorite. Apparently, [name_m]Saint[/name_m] [name_m]Magnus[/name_m] was called Mang.
Hello @jennygal,
What extraordinarily fantastic names you’ve given your sons.
A sibset idea for you:
[name_m]Augustine[/name_m] {and} [name_m]Ignatius[/name_m] {and} [name_m]Ferdinand[/name_m]