Passing of Last Full-Blooded Mandan Indian, Mattie Grinnell, at Age 1081974-01-01unknownhttp://rightsstatements.org/vocab/NKC/1.0/enghttp://congressarchives.org/record/CAC_CC_001_4_132_2_0001The last full-blooded member of the Mandan Indian Tribe, Mrs. Mattie Grinnell, passed away at the age of 108. She was a strong advocate for her Indian heritage, participated in social movements, and lived a full life despite facing challenges. Mrs. Grinnell had a large family and was known for her vitality, charm, and spirit. She believed that her longevity was due to using Indian medicine. She was also the last person to receive approval for a Civil War Widow's pension.