William Bradley Kincaid, born on July 13, 1895, in Point Leavell, Garrard County, Kentucky, was a prominent American folk singer and radio entertainer. Known for his warm tenor voice and simple guitar accompaniment, Kincaid became a beloved figure in the country music scene. He began his radio career in 1926 on the National Barn Dance show on WLS-AM in Chicago, Illinois, where he quickly gained popularity, receiving over 100,000 fan letters annually.

Kincaid was a pioneer in the publication of songbooks, with his 1928 "My Favorite Mountain Ballads" selling over 400,000 copies. His career included performances on various radio stations, such as KDKA in Pittsburgh, WBZ in Boston, and the NBC network in New York City. In 1935, while at WBZ-AM, he famously nicknamed Marshall Jones "Grandpa" Jones, a moniker that stuck with the future Grand Ole Opry star.

In 1945, Kincaid moved to Nashville, Tennessee, and joined the Grand Ole Opry, where he performed until his retirement in 1950. He later invested in a radio station and opened a music store in Springfield, Ohio. Despite retiring from the road, he continued to record music, including a significant session in 1963 where he recorded 162 songs in four days.

Kincaid was inducted into the Nashville Songwriters Hall of Fame in 1971 and the Kentucky Music Hall of Fame in 2002. He passed away on September 23, 1989, in Springfield, Ohio, leaving behind a legacy as a key figure in popularizing traditional folk songs and influencing future generations of country musicians.