I realize that you posted this almost 2 years ago and may already have an answer to your question but there was no follow up so:
Benjamin F Curtsinger was actually the son of Daniels Case Curtsinger. I show him as being born in 1894 in Ky and died June 5, 1979 with burial in WIllisburg, Ky. He married Amelia Chesser although I do not have the date handy (I don't have all of my papers right here with me).
Bejamin was the son of Daniel Case Curtsinger (Aug 11, 1856- March 12, 1935) and Sarah Jane Green (Jan 17, 1856- ?). They were married Feb 7, 1877 in Washington Co, Ky. Daniel is the son of William and Harriet Curtsinger. Their other children are: Martha, Richard (m. Ida Boblitt), William Grundy (m. Alice Mae Boblitt) and Mattie (m. Bob Tingle).