The Cemetery of Walnut Grove was a cemetery in the town of Walnut Grove. It was located just outside the playground area outside of Walnut Grove Church and School and could be seen from Oleson's Mercantile. It presumably served the town since its founding in 1840 by Lars Hanson. There were many trees in it and around it. The cemetery features many upright stones and at least two small obelisk-type monuments. Some of the folk buried there by the mid-1870s were W.J. Holman (Grandfather) (b. 1780 - d. 1865), Sam Benson (Son), and Annie, daughter of George R. A fallen group of dead trees lied just outside of the cemetery treeline and was where Willie showed Laura and Carl the bloodstained apron that belonged to Mrs. Oleson. (Episode 305: The Monster of Walnut Grove)