I've been thinking about origin of werewolf species lately and came to some conclusions / theories. Jackson said his and the Hayley's families were at beginning of the werewolf race. I thought about it why was only this two since there was seven lines? I figured maybe Jackson family was from Hollow father's tribe and Hayley's was from her mother's tribe. It seems to me that it was suggested from the beginning that Hollow's father wasn't related to the Labonair family. Therefore, he must have died or walk away from Inadu's mother.
I have also heard many times that there couldn't be seven strains of werewolf venom since the seven original packs were marrying into another to possess the same abilites.However, it seems to me that you can just be one of the seven werewolves. So if a Malraux wolf will have a child with a Crescent wolf then the child can either be one or the other and not a Malraux-Crescent wolf. Thats why there are still sevens strains of werewolf venom.
The last theory is about why there are four bones and four elders but seven lines. I think three different bloodlines took bones: Apisi (Lockwood's), family from Papa Tunde's Blade (maybe Guerrera), Del Robles and three different spelled the ax: ancestor of Ansel and Klaus, Malraux ancestor and maybe Jackson's ancestor. Whereas the ancestors of the Labonair family spelled the ax and also took bone to protect.