Who is Firestar's family?

Vicky, one of the authors of the warriors series, revealed on her Facebook page that Jake, from Bluestar's Prophecy, is Firestar's father.
Actually, Firestar's father was Jake, a kittypet. I think the last person that answered was confused, because Princess' mother was unknown. This family tree reveals that their father was Jake. http://warriors.wikia.com/wiki/Princess
Jake, the Kittypet on the Twoleg fence in 'Bluestar's Prophecy'.