Margaret E. "Donia" Corcoran Peterson, 66, of Great Falls, passed away on Saturday, August 3, 2013, at Peace Hospice due to cancer. Wake services will begin at 4:00 p.m. on Sunday, August 4, 2013, at Our Saviour's Lutheran Church in Rocky Boy, and will continue until her funeral service, which will be held at 11:00 a.m. on Monday, August 5, 2013. Interment will follow in the Rocky Boy Cemetery. Holland & Bonine Funeral Home has been entrusted with services and arrangements, and you can leave your memories and/or condolences for the family at www.hollandbonine.com. Margaret was born on December 16, 1946, in Havre to William and Lily (Whitford) Corcoran. She was raised all over Montana, attending schools in Babb, Shelby, and Helena. After high school graduation, she continued her education at Montana State University-Bozeman. She married F. Richard Croasdell, and the couple's union was blessed with two children. They later divorced, and she married Peter "Jerry" Peterson in Great Falls in 2001. Over the years, Margaret worked as a bartender and a waitress, always providing a loving home for her children. For many years, she cared for her grandchildren so her daughter Michelle could serve with the US Air Force. Margaret enjoyed Scrabble, reading, crossword puzzles, spending time with family and friends, taking pictures, geneaology, Facebook games, spending time on her computer, going to casinos, travelling, movies, Sudoku, and listening to music. She was a proud member of the Chippewa Cree Tribe at Rocky Boy. She was preceded in death by her father William L. Corcoran; her daughter Georgia Nyquist; her unborn grandson William L. Anderson; and her brother George Corcoran. She is survived by her husband Peter "Jerry" Peterson of Great Falls; her daughters Lori (Mike) Osgood of Havre, and Michelle (Dwayne) Lee and Leiloni (Jason) Anderson, all of Rochester, WA; her sons, Junior (Lori) Peterson of Dresser, WI, Rodney (Leslie) Peterson of Centria, WI, Curtis Peterson of Spokane, WA, and Larry Peterson of Flagstaff, AZ; her mother Lily Corcoran of Rocky Boy; her brothers William Morris (Wilma) Corcoran of Rocky Boy, Joe Corcoran of Rocky Boy, Dale Corcoran of Billings, MT, Peter (Chris) Corcoran of Helena, MT, Frank (Nancy) Corcoran of Chambersburg, PA, Ron (Vidella) Corcoran of Billings, MT, Jimmy (Theresa) Corcoran of Slatington, PA, Steve (Pam) Corcoran of Rocky Boy, and Earl (Norie) Corcoran of Harrisburg, PA; her 24 grandchildren; and her 4 great-grandchildren.