Leonard was born to Daniel Dickhaut and Rose Sayler Dickhaut at Lesterville, SD on Nov. 28, 1936. He moved to Tolstoy, SD with his family as a young boy and moved to Roscoe, SD as a young man.
Leonard was released from active duty training and returned to State control as a member of the Army Reserve to complete his remaining service obligation of 5 years and five months after his father passed away in 1961. He took over the farm and took care of his mother until her death in 1966.
He married Mona Genzlinger on June 15, 1966 at Howard, SD. They lived in Madison and Howard before moving to Winner in 1976. He was a lumber yard manager and was an interior and exterior painter in Winner.