John J. Pierpoint is a son of Larkin Pierpoint and Jane Dunn.This is documented in Kathryn Hedman's "Pierpoint-Pierpont Family of Maryland-Virginia-West Virginia."This book also references A.B. Stickney's "Lucy & Oliver".Lucy is John J's Lucinda who married Oliver Jones.A.B. Stickney was Lucy and Oliver's grandson.
Unfortunately, Hedman does not list your John in Lawrence Co, OH.