The language of the Cayuga is a dying one and the Cayuga are trying to keep it alive.
The Iroquois had many tribes it was against, like the algonquins, the Huron, the erie and the neutral and despite accepting the peacemaker's message, the Iroquois actually fought a few wars, including a large one with the huron, montagnais, susqehannock, french and the erie
They actually lived where they had since 1000 AD.
They pushed other tribes from where they were in 1200 AD.