Am I mad?

[Pika09]

We're considering either Ronin or Perses as names for a boy. Crazy idea or not?

It seems like you're wanting a name that's a bit different @Pika09 and that's totally understandable. What i would warm you though is that "Ronin" sounds fairly similar to a load of top 100 names, including the current fastest rising name Roman (which every celeb seems to be using). Also will be misheard for Ronan. I think if you're wanting something a bit different that's great but look at the fastest rising names and have a think of you'd like to avoid a name so similar and ripe for confusion.

Perses is ok, sounds a bit like Percy but that's pretty rare too so won't get muddled

Yes. You're mad.

Ronin is Ok but it will be pronounced like Ronan, people will assume it's a variation of that. Ronan is a really nice name though and a 'proper' name, why not go with that?
Or, Rowan, Rohan, Rory etc

I agree @Overthinker1988 Ronin sounds so similar to Ronan it just seems like a variation of the name. It seems like OP is wanting an unusual name and seen as names like Rowan, Roman etc are all storming up the top 100, maybe Ronin is a name for OP to avoid as it'll sound similar to many top 100 names.

Perses might be a better option. What about Percy?

Perseus would be better I think.

don't laugh when they see the name on a CV when your child is an adult trying to get a job.

Personally, as the owner of a distinctly "odd" (sur)name, it's only ever been an advantage in life ... it's a rare interview where someone doesn't ask it's origins, and that's a chance to deliver a confident "impromptu" minute or so lecture that John Smith or Jane Brown might not get.

(DS has reported similar ...)