I've read about the enmity between Honyere and Brant in several sources but just took this to be a result of the conflict – i.e. both men were the principal war chief on each side, both wanted to bring all the Nations of the Confederacy together against the enemy ( Brant against the American Rebels, Honyere against the British ) and for each man the other was his main obstacle in achieving that goal. Since the Oneidas had sided with Congress, and from Brant's perspective had enabled Sullivan's Campaign against the lands of the other Nations, it doesn't surprise me that revenge and the complete destruction of Honyere and the Oneidas would quickly have become one of Brant's goals.
The quote from Brant about his father is interesting and I don't remember that – depending on when Brant's mother remarried though, it might equally pertain to his stepfather rather than his biological father, the latter being supposed to have died or left shortly after Brant was born. It is a bit strange that Brant's own children never heard anything about his father but perhaps he knew little about him himself.
Iah te'konkwehon:we, but have found the languages and history pretty interesting. There was a story in the family that an ancestor in our Loyalist line was Hotinonhsion:ni but that has never panned out in the records, or at least not on paper. It has still been interesting to go through the histories of the Six Nations during the Revolution and the War of 1812 though. The stories here aren't learned a whole lot but are easily the most interesting part of American ( and Canadian ) history once one gets in there to interpret the fine details. I'll post again if I come across anything further on Brant or Honyere's ancestry – O:nen.