The following record was taken from the book, "Marriage Bonds of Hardin County, KY 1813-1822" by Mary Harrel Stancliff.
Page 37. Lambert, Garrett and Ruth Ann Duffy. Surety, John Duffy. Note on bond says that John Duffy swore that he had heard Lewis Duffy say that he was willing for this marriage to take place. Apr 12, 1816.
Following was taken from Hardin County, KY Marriage Bonds 1792-1815.
Miller, Philip to Elizabeth Duffey, Sep 16, 1804 - Daughter of Lelvie (?) Duffey.
Following was taken from "Marriage Records of Berkely Co. VA 1781 - 1854 by Guy L. Keesecker.
Duffey, John W. m. Raimer, Cath - Sept 4, 1843. Suretor Fred. Raimer, bond 6b105.
According to family tree I found online, Elizabeth, Ruth Ann, John G. W. and James P. were all children of Lewis Duffy and Rebecca ?. I have not been able to confirm this.