I believe I have a match. Franklin Pierce Copp, born 13 March, 1879 in Bradford, VT, was the son of Byron S. Copp and Abbie A. Wallace. This Franklin had two sons, Lawrence C., b.1915 and Frank E., and four daughters, Helen K., b. 1919, Mildred L., Evelyn, and Frances. Another son, Franklin L., died young. Franklin P.'s brother Lewis B. was the father of my grandmother Lois A. Copp, who married Harry Abbott. As for Fred Copp, if he's Frederick Eldin, b. 1932, and the son of Lewis B., I believe he is still living, though I couldn't tell you exactly where in NH. I last saw him at my grandmother's funeral in 1997.
Tell me more about your connection to Franklin. Are you descended directly from him? I'd like to know what became of those 6 children.
-- Stephen Abbott