Billy-Ray was a preacher's son
Possibly the most iconic blue-eyed soul song of all time, Son Of A Preacher Man was written by John Hurley and Ronnie Williams and tells the story of a preacher's son that comes to town and steals the heart of the narrator.
The song was originally planned to be performed by Aretha Franklin, but she turned it down citing that she was uncomfortable with the lyrics (Franklin's father was a reverend). She later recorded a popular cover version.
The preacher's son in the song is named Billy-Ray, and follows his father, a travelling preacher, from house to house.