Son of a powerful politician or wealthy businessman. Growing up in a privileged life, e.g. sports cars on eighteenth birthday, elite universities and prep schools (admissions gained more through connections than competence).
Often follows in parents footsteps and makes it to the top, again largely based on connections opening doors rather than through mostly talent and ability.
* These videos are coming directly from Youtube, they may or may not be most relevant to the word "Princeling"