Allah's Laws are the same for everyone. So being the son of a Noble man, or being of the progeny of a Prophet is not the criterion.
11:45 Noah called upon his Lord, "My Lord! My son was of my family and Your promise is the True promise and You are the Most Just of judges."
[So, why was he not saved? Didn’t You promise to save my family?]
11:46 He (God) said, "O Noah! Your son was not of your family. For, his conduct was unrighteous. So, do not ask me of what you have no knowledge. I enlighten you so that you do not remain ignorant.”
[You were not aware of the Divine Criterion of relationships which are based on Ideology and not on lineage otherwise you would not have asked such a question]
Prophet Muhammad (PBUH): "Remember that the criterion of superiority is your character. It is not your complexion, your lineage, or your wealth"(Bukhari, Muslim).
The above saying of the Exalted Prophet is from Dr. Shabbir's Book, A Selection of Ahadith, which is in agreement with the Qur'an.