Question about punctuation

[luzula]

Here is a sentence with three variations in the comma placement:

1) It was not yet noon, and though it was October, Keith thought he might reach Ardroy that same day.
2) It was not yet noon and, though it was October, Keith thought he might reach Ardroy that same day.
3) It was not yet noon, and, though it was October, Keith thought he might reach Ardroy that same day.

I feel like 1) is the most common today and the one I would have used before my current fandom. But the 1925 book I'm writing fic for only uses 2) and 3), so that's what I am now using in my fic. I suppose 2) and 3) do make more sense in a way, because if you remove the phrase "though it was October" with its surrounding commas, you still get a sentence that works, which is not the case in the first one if you remove "and though it was October" with its surrounding commas.

My sample here is just one author, but I do wonder whether 2) and 3) are more old-fashioned ways of using commas?

Comments

[lyr]

Grammatically, #3 is correct because it places commas around the extra info you can cut out of the sentence and also before the conjunction. But being grammatically correct is a bit old-fashioned. #1 implies the "and" as being part of the same thought as "though it was October," which I wouldn't; that's a more common construction nowadays, though.

[luzula]

Thanks for the input! : ) And confirming my impression that 1) is a common way to do it...