Italian/Latin first name for the nn Sol?

Writers' Corner
1

[name_m]Hi[/name_m] berries,

I have a character in my fantasy series who I’ve had a lot of trouble naming. He’s been [name_u]Elias[/name_u], [name_m]Emilian[/name_m], [name_m]Maximilian[/name_m], and [name_m]Navarre[/name_m], but none have ever quite clicked with him.

Recently [name_u]Sol[/name_u] popped into my brain and it feels like a perfect fit, but too short on it’s own. So I need a first name that lends itself easily to that as a nickname.

He’s from a culture based on ancient [name_u]Rome[/name_u], so Latin/Italian names are preferred, hence my issue with the length of [name_u]Sol[/name_u]. For context he has a brother named [name_m]Domenico[/name_m] and a sister named Iulia; a former lover is [name_f]Caecilia[/name_f] and their daughter is [name_f]Celestina[/name_f]. His parents were Samaire and [name_m]Leandro[/name_m]. Ideally his name won’t end in ‘o’ as that’s too similar to his brother’s in sound. He spends most of the book with [name_m]Domenico[/name_m] so their names will be side by side a lot.

He was [name_u]Solaris[/name_u] for a little while, but that doesn’t fit the naming conventions of his country (think [name_m]Roman[/name_m] emperor/empress names!) He was also Solvatore (instead of [name_m]Salvatore[/name_m], how smart am I?) but it just doesn’t look or read right to me with that spelling?

tl;dr How can I get to [name_u]Sol[/name_u] as a nickname?

Thank you

2

[name_m]Solomon[/name_m]?

3

Late [name_m]Roman[/name_m] names, all stretchy:
Florinus or Florentius ?
Silverius or [name_m]Silvius[/name_m]?

Latin words containing ‘sol’:

Insolitis
Solamentum
Solanus
Solarius
Solatus
Solearis
Solearius

4

It’s not a real name but have you considered Solarus? if you what to follow the roman naming convention I mean

5

Rather than straight giving them a name with [name_u]Sol[/name_u] in it, none of which will get much better than [name_u]Solaris[/name_u], what if you give him something really pretenious or long or just really annoying that means sun or relates to the sun in some way, like [name_m]Apollo[/name_m] or other. Then one of their childhood friends knows this, and gives them the nickname [name_u]Sol[/name_u].