Katherine "Scottie" MacGregor (born Dorlee Deane McGregor; January 12, 1925 – November 14, 2018) was an American actress, best known for her role as Harriet Oleson in Little House on the Prairie. Katherine MacGregor was born Dorlee Deane McGregor on January 12, 1925, in Glendale, California, to Ralph S. McGregor and Beatrice E. Willard. When Katherine was a child, her mother Beatrice moved the family to Fort Collins, Colorado, where... see more