Cavin L. HANCOCK (age 16,b MS) appears in the Thornton (63, SC)& Eliza (58, SC) HANCOCK household, # 860, in the 1860 Itawamba County, MS census. Judson (19, b MS), Joseph S. (26,MS) & Martha (24, MS) make up the remainder of the household. It would seem this is not the Calvin you are looking for but the name may be a link to a grandfather/uncle/brother etc. Those HANCOCK's of my line seem to be closely related to CRAWFORDs, EVANS & GRIFFINs who were in NC & SC in the late 1700's early 1800's. Have you encountered any of these family relationships?