Is Augustine too out there?

[Dre3000]

What do you all think?

I also thought it was a girls name? Because of Celestine and Albertine which are girls names ... Aren't they?

Were you inspired by that rower in the Boat Race? It certainly stood out (but not necessarily in a good way, sorry!). It’s distinctive, though, and as suggested above Gus is a good nn.

“Because of Celestine and Albertine which are girls names ... Aren't they?”
Yes they are-and Augustine to rhyme with those is a French girl’s name. (3 three baby girl Augustines in the U.K. by the way) The English boy’s name is Au-GUS-tin.

I would also presume Augustine to be female with the male version Augustin.
This is probably because I spent many years in France.
It's like Valentin/Valentine
Célestin/Célestine
Clement/clementine
Aurélien/Aurelie

Sonny feels like a nickname, but I like Gabriel ( not Gabe).

I would avoid Sonny .

I would think that Augustine was a girl even though the saint was male. As for Augustus - no! It makes me think of Augustus Gloop and given that Charlie and the Chocolate factory is a popular book and film it's not a link that will go unnoticed - all 3 of my DCs read it in school and at home.

“I would think that Augustine was a girl even though the saint was male”
Why?

Gabriel is my favourite, FWIW. It was on one list but didn't go with our surname.

Beautiful name. Not too common, but not too out-there. A classic but feels contemporary. And even though it's an angel name, I don't think it reads as religious in the way Augustine does - I wouldn't assume anything about the parents' faith.

It just sounds like a girl's name with the -ine ending like Clementine.

Augusta is the female alternative, you don't hear it very often!

Augustine is used for a girl in France.

Both terrible but no name is loved by everyone

hmm much prefer August (love) or Augustus. Nns Auggie and Gus are cute too x

Augustine would immediately make me think of Saint Augustine. I'd think it was odd on a girl because of that.

I quite like Gus.

Sonny was a nickname in my mum's family so it has that association for me.

St Augustine (anglicised version) traditionally brought Christianity to England when he converted King Ethelbert at Canterbury. Definitely a male name. Augusta was the most common feminine form and was quite popular in Victorian and Edwardian times.
Sonny will not suit anyone over a certain age. In my experience in the past it was mainly used in place of the American junior for a son with the same name as his father.
Gabriel is ok and the best of your suggestions OP.

Both Augustus and Augustine are lovely IMO, but yes, you will be channelling Catholicism.

The male version is present in a few of our family members and comments are made about the religious leaning. Sadly.

How about Santino with Sonny as the nickname like in The Godfather movies.

Absolutely love it. I also have a Gabriel and may use Augustine for my next one!!

Not keen on Sonny.