Gennie's family moved to De Smet not long after the Ingalls family, but the Owens family did not move. Therefore, the "Nellie" of "Little Town on the Prairie" is most likely Genevieve Masters. In her "Letter to Children" written late in her life (a sort of form letter sent to the hundreds of children who wrote her monthly), Laura stated: "Nellie Oleson . . . moved back East, and did not live many years." Laura was evidently referring to Genevieve Masters in this letter as Nellie Owens lived to the age of 80. Masters married William Graham V. Renwick (1864-1924) and had one daughter, "Margaret" (1900-1982).