At the University of Notre Dame, Hargrave became the starting quarterback for Elmer Layden's final season as head coach in 1940. He would post a 7-2 record and earn Honorable Mention All-American honors. After graduation, he spent four years serving in the United States Navy during World War II. On November 11, 1944, he married Florence Molyneaux in San Francisco, California.
Following the war, the couple moved to Florence's home town of Chicago, Illinois, where their first two children were born. In 1948, Hargrave moved his family back to Evansville, where they had five additional children.
Hargrave was inducted into the Indiana Football Hall of Fame on November 30, 1979.
- "Robert W. Hargrave (1920 - 2014)". Courier Press. Courier Press. 30 July 2014. Retrieved 5 November 2014.
- Bob Hargrave's profile at the Indiana Football Hall of Fame
- Florence M. Hargrave obituary
- U.S. Public Records Index