Dorothy Rose Anstett Gregson died peacefully on October 7, 2026, surrounded by her children.

Dorothy was born to Leo Francis “Cap” Anstett and Florence Edith Drake Anstett on November 7, 1930, in Hot Springs, South Dakota. She attended first through sixth grade in Oelrichs, South Dakota, seventh grade in Fairbanks, Indiana, returned to Oelrichs for eighth and ninth grades, and graduated from Chadron Prep High School in Chadron, Nebraska in 1948. She received a Bachelor of Science in Education degree from Chadron State College in 1952 where she was active in Zeta Alpha Sorority, Sigma Delta Nu (a teacher’s fraternity), Pep Club, and worked part-time in the college offices. She married Glenn Francis Gregson from New Underwood, South Dakota, in Chadron on June 16, 1951. Their first teaching positions were in Quinn, South Dakota where she and Glenn, along with Glen and Jeanne Wyatt, were the entire high school teaching staff; Glenn coached football, basketball, track and taught Math. She taught Business, Home Economics and English. Their first child, Kathy, was born in November 1952. They spent a summer in Greeley, Colorado in 1955 where Glenn finished his Masters degree, and their second child, Jana, was born. They moved to Havre, Montana, in 1957 to teach at Havre High School. Their third child, Jeff, was born in Havre in 1958. In 1962 Glenn took a position as the Superintendent of Schools in Hill City, South Dakota, where Dorothy taught Business classes, and their fourth child, Joe, was born in Rapid City that first fall. They moved to Newcastle, Wyoming in 1967 where Glenn served as High School Principal and Dorothy taught Business classes for nine years. They moved once more to Sundance, Wyoming where Glenn served as High School Principal and Dorothy taught Business classes at Sundance High School for the next twelve years. Over the years she was involved in various organizations including Extension Club, Jayceettes, American Legion Auxiliary, Friends of the Library, the Wyoming Education Association, Montana Education Association, and was a lifetime member of the National Education Association. She was active in Beta Sigma Phi for over fifty years. Although she grew up Methodist, she converted to Catholicism when she married Glenn where she served as treasurer and played the organ in the Catholic churches in Newcastle and Sundance for several years. She served as a leader for many of Kathy and Jana’s Girl Scout troops, and assisted in many of Jeff and Joe’s Boy Scout activities. She rarely missed any of the children’s extra-curricular activities over the years.

Dorothy spent 29 years as a teacher influencing, mentoring and making a difference in the lives of countless students. She loved to sew and made many of the children’s clothes when they were younger (often staying up late at night to finish matching outfits for Kathy and Jana for Easter morning or midnight mass), graduating to the beautiful quilts she made for her children and all of her grandchildren. She taught her daughters and some of her granddaughters and great-grands to sew, knit, crochet, embroider and cross-stitch, and made many beautiful pieces that won various county fair blue ribbons. She loved to play games of all kinds, especially card games and, of course, was a creative teacher and competitive opponent for anyone wanting to learn a new game. She was a wonderful cook and loved to bake. She enjoyed genealogy and worked numerous hours collecting and organizing several lines of the family’s ancestry, writing letters to relatives, gathering photos, and documenting her research. She was a woman of grace and wisdom, and a wonderful listener with a servant’s heart who loved the Lord.

She was preceded in death by her husband Glenn, her parents, Leo “Cap” and Florence Anstett, and her brother, Carl Anstett.

Left to cherish her memory are her children Kathy and Roger Teat of Cherry Log, Georgia, Jana and Keith Metcalf of Sundance, Wyoming, Jeff Gregson of Sundance Wyoming, and Joe and Andrea Gregson of Gillette, Wyoming. She has ten grandchildren, Kylie Milich, Sam Teat, Tori Sallee, Kari Peterson, Ryan Sallee, Jared Sallee, Benjamin Gregson, Karli Burke, Todd Gregson, and Megan Nachtman. She is also blessed with 20 great-grandchildren, 10 great-great-grandchildren.

Pallbearers and honorary pallbearers include Dorothy’s grandsons Sam Teat, Ryan and Jared Sallee, Benjamin Gregson, Todd Gregson and great grandsons, Brendon Newman, Chace Peterson, Breck Sutherland, Kale and Tace Sallee, Hunter Sallee, Joey and Taren Gregson, Austin and Steven Moehr, Benjamin Gregson, and Zarko Milich.

Visitation and viewing will be held from 3 pm to 5 pm on October 14, 2026, at the Fidler-Robert & Isburg Funeral Chapel at 208 Main Street in Sundance, Wyoming, with a rosary held at 6 p.m. at St. Paul Catholic Church in Sundance. Mass of Christian Burial will be held at 9:30 am on Thursday, October 15, 2026, at Crook County School District-Central Administration Office, located at 122 WY-585 in Sundance, Wyoming, with Father Brian Hess. Burial will follow at Black Hills National Cemetery near Sturgis, South Dakota, at 1:30 pm. In lieu of flowers, several memorials have been established.

Arrangements are under the care of Fidler-Roberts & Isburg Funeral Chapel of Sundance. Online condolences may be written at www.fidler-isburgfuneralchapels.com