According to ESPN:

80. Merlin Olsen (DL, Utah State, 1959-61)
A ferocious defender on the field and a gentle giant off it, Olsen was a two-time All-American at Utah State and won the Outland Trophy as the sport's best interior lineman as a senior in 1961. He finished 10th in Heisman voting that season. He was also honored by the National Football Foundation as one of the country's top scholar athletes. In the NFL, Olsen was part of the Los Angeles Rams' "Fearsome Foursome" defensive line. He is perhaps best known for his acting roles on TV shows such as " Little House on the Prairie" and "Father Murphy." In 2009, Utah State announced that the field at Romney Stadium (now Maverik Stadium) would be named in Olsen's honor.

Good find my Aggie brother! Thanks!