Here is a transcription from a wartime diary that mentions "Mr. Reps Duffer"
From the diary of Kate S. Carney {native of Murfreesboro,Tennessee}

Sunday 29th 1862

Came home after being up all night. Addie Ledbetter, Eliza Nelson, Mr. Drumright, Mr. Reps Duffer, & Mr. John Brown also sat up & not one of us went to sleep. The body had to be placed in the casket soon after supper, as decomposition had begun. As soon as I returned, went to sleep & didn't get up until 10 or eleven o'clock. Ma then waked me up to take charge of the keys, as she & cousin Ann were going out to Mr. Hord's to see Aunt McCulloch, & Pa came home about 4 or 5 o'clock from Mr. Duffer's little child's burial, & Uncle William Lytle came with him & waited to hear from Aunt McCulloch. Cousin Mary Lytle & Willie were here a few minutes this evening. I was compelled to speak to the Yankees today, (as Ma was not here) on business, but I didn't want to do it.

Be sure to check this link below; as there are more "Duffer's" mentioned in the diary(use your "EDIT"/"FIND" on your browser to find them)

http://docsouth.unc.edu/imls/carney/carney.html

Best Regards,
John