Kishi never left a clue on what clan Jiraiya was from so i am going to base it on the hair color....
other than sakumo,kabuto, tobirama, kakashi, and Itama.. no other Konoha Shinobi has white hair.....
Yakushi kabuto was not an original Konoha Shinobi so we can cast the Yakushi out of the equation...
the third usually teams up those clan with good compatibility..Jiraiya and minato established that compatibility so it is only natural for Hiruzen to choose someone from Jiraiya's clan to be teamed up with minato...and the only white haired student minato has is kakashi, which denotes that Kakashi and jiraiya is somehow related.... So I will guess Jiraiya is from the Hatake clan....
We also do not know who Butsuma married... that passed the white hair to Itama and tobirama....
again i am going to base on the hair color.. the only known white haired clan in konoha is the hatake...
So i guess Butsuma married a girl from the ancestors of the Hatake clan...
other than sakumo,kabuto, tobirama, kakashi, and Itama.. no other Konoha Shinobi has white hair.....
Yakushi kabuto was not an original Konoha Shinobi so we can cast the Yakushi out of the equation...
the third usually teams up those clan with good compatibility..Jiraiya and minato established that compatibility so it is only natural for Hiruzen to choose someone from Jiraiya's clan to be teamed up with minato...and the only white haired student minato has is kakashi, which denotes that Kakashi and jiraiya is somehow related.... So I will guess Jiraiya is from the Hatake clan....
We also do not know who Butsuma married... that passed the white hair to Itama and tobirama....
again i am going to base on the hair color.. the only known white haired clan in konoha is the hatake...
So i guess Butsuma married a girl from the ancestors of the Hatake clan...