The Rev. Duncan was born in Hopkins County, Kentucky, in 1898. Was converted in 1917 at Concord Church. In 1921 he was baptized by Rev. Billie Williams, and joined the Concord General Baptist church, and has been a member there ever since.

In 1924 he felt the call to preach. However, did not heed the call for four years, or in 1928. Was ordained to the full work of the ministry the 29th day of march, 1930.

He has preached 3,000 sermons; witnessed 600 professions of faith; received 500 members into the General Baptist church; baptized 450; conducted 375 funerals; married 175 couples.

He has pastored the following churches: Concord, Star Hope, Oakley Home, Cumberland Valley, Freedom, Pleasant Union, Cedar Grove, Gum Grove, Tilden, Mt. Olivet, Beulah, Madisonville, Union Temple, Union Cross Roads, Sebree, Green's Chapel, New Hope.

Rev. Duncan has been a minister of the gospel for a quarter century.