Final answer:
Georg Friedrich Händel was the godfather to Johann Sebastian Bach's son, Carl Philipp Emanuel Bach, reflecting the common practice of esteemed individuals becoming godparents within their professional circles.
Step-by-step explanation:
The godfather to Johann Sebastian Bach's son, Carl Philipp Emanuel Bach, was none other than Georg Friedrich Händel.
During that period, it was common for prominent figures within the same professional sphere, such as composers and musicians, to establish connections by becoming godparents to one another's children.
This honorary title was given to trusted and esteemed individuals within one's circle and indicated a life-long commitment to the child's welfare and upbringing, including their musical education in this case.