 His mother was born in Vermont and was a descendant of Edmund Rice, an early immigrant to Massachusetts Bay Colony.Ingalls' paternal grandmother was Margaret Delano, a descendant of "Mayflower" passenger Richard Warren as well as from the Delano family of New York and ancestors of U.S. President Franklin Delano Roosevelt.In the 1840s, when Ingalls was a young boy, his family moved from New York to the tallgrass prairie of Campton Township, just west of Elgin, Illinois.