Princess Peacefull winds

I always knew that my ggrandmother was supposed to have been a blackfoot indain princess. Recently, my Aunt said she believed her name was Princess Peacefull Winds. This all I know except that my grandfather, her son, was raised in PA. I am just starting my search into my family. If anyone has any ideas… I have always been told I was Blackfoot and Cherokee but the Blackfoot is from my mother and the Cherokee my father.