The Tribe is comprised primarily of Northfork Mono, a label given them by an ethnographer in the 1910s to describe people then living along and north of the San Joaquin River. By the early 20th Century, non-Native acquisition of lands in the San Joaquin Valley, both on the flat plain and the surrounding foothills, had resulted in Tribal citizens concentrating around the town of North Fork near the Sierra National Forest. This is how the Tribe became know as the North Fork Band or North Fork Mono. However, ancestors of the Tribe also include members of Yokut and Miwok linguisitic groups. Further, the town of North Fork is only one place among many of significance to the Tribe, as their use and occupancy of lands in the San Joaquin Valley, and around the City of Madera in particular, is extensive.