(Jan. 8, 1890-Sept. 25, 1977). Born in Ohio, Grabill moved to Indianapolis and attended the Benjamin Harrison Law School (later absorbed into Indiana University Law School). He was admitted to the Indiana bar in 1918 and joined the firm of Denny and Miller. He served as the county attorney for Marion County in 1931 and, in 1937, established the law firm of Grabill and Baker.
Indiana Governor Henry Schricker appointed him in 1949 to serve as chair of the Indiana Probate Code Study Commission created by the Indiana General Assembly to recodify the probate laws of the state. His efforts resulted in the first major changes in the Indiana Probate Court in over a century when a new Indiana Probate Code was passed by the General Assembly in the early 1950s. Grabill served as the president of thein 1943, a member of the board of directors of the , and a lecturer at Indiana University Law School.