This kind of piece is really a theme and variations. Another common type of piece is the Prelude and Fugue, two movements. The first is free-form, often melodic like a short sonata, or constructed of chords; the second is made like a round, like Row, Row, Row Your Boat except WAY more complicated.
Borne [borne] as a boys' name has its root in Middle English, and Borne means stream. Borne is an alternate form of Bourne (Middle English): place name.
A bearer is a person who carries or delivers something. If you hate to be the bearer of bad news, don't become a traffic cop. If you're the flag bearer in a parade, it means you march at the front gripping a flag, and a coffin bearer holds one end of the coffin at a funeral. You'll often find the word in the phrase bearer of bad news or bearer of bad tidings..