Firstborn (noun)

1. The eldest child in a family.
2. A person or thing that is the first of its kind to be created or discovered.
3. A person or thing that is highly valued or respected.

Origin:

From old english fyrstgebyrd, from fyrst ("first") + geboren ("born"). .

Examples:

1. The firstborn son of the King was the heir to the throne.
2. The Wright brothers were the firstborn of aviation technology.
3. The Mona Lisa is considered the firstborn of Renaissance art.
4. The firstborn of the flock is usually the strongest and most capable.
5. The firstborn of the family was given the most attention and resources.