No expecting an official answer, so it's more of a brainstorming thread. I recently read again the Monster Core 2 and started wondering about this piece of Adlet lore:
Adlets' legends say that long ago, a mighty hunter lost his way far from home and came upon a house of whalebone and ice. A woman dressed in white fox furs greeted him, fed him, and tended to his frostbite. In time, they married and had 10 children, five of whom bore the legs and tails of foxes. These children stayed with their mother, while the other five—born with the legs and tails of wolves—traveled with their father back to the human lands and became the first adlets.
Assuming that the mother is Daikitsu, who could be the father of the Adlets?
Options that I thought of:
Erastil
While he's married to Jaidi, there's an option that it happened before he got married. Erastil is commonly refered to as a hunter, so it's the go-to answer, but it doesn't fit with the way adlets are now - militant and xenophobic. Also, Daikitsu and Erastil are not in the same pantheons, so I don't think they interact a lot - at least not enough for me to see it happen. Still, the easiest answer.
Cernunnos
Erastil's son, is again an easy answer, especially if the fox-people are vulpinals. But it isn't perfect, as Cernunnos is both stag-themed and not wolf-themed, and the fact that Cernunnos isn't an agathion but an azata. Still, an option.
Curchannus
Probably my favorite answer at the moment, the dead god of beasts, travel and endurance would fit as a partner for Daikitsu and as a father for the adlets. More than that, without his guidance after his death, the adlets might have lost the way, becoming xenophobic and militant.
Daikitsu
Playing both roles in the story, the gender-shifting Daikitsu might have been both the hunter and the woman in the house, with the myth symbolizing that while they were created with a more militant aspect of the goddess (the hunter) they're still related to the her motherly aspect (the fox woman) from birth.
Garhaazh
A little stretch, but hear me out. Adlets are present on Triaxus according to Reign of Winter, so with the Adlets 'leaving with their father' they might have gone to Triaxus, with some migrating back to Golarion only a time later. Garhaazh can be described as a mighty hunter. The problems are mostly the fact that he cared enough about the woman to have kids with her, and the fact that the kids are not dragons. Still, I wanted to include a Triaxian deity here, seeing that as an option.
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Is there an option you prefer? Or theories of your own? I would love to hear some!