Short answer
No. Family background can be relevant, but it should not become an excuse for arrogance, discrimination or rejecting a suitable person solely on social status.
Islamic Guidance
What Islam teaches
Islam recognizes that people should consider compatibility and circumstances when making marriage decisions. At the same time, the Qur'an rejects superiority based merely on lineage or tribal identity.
Practical Guidance
What you can consider
Consider family environment, values, expectations and responsibilities, but evaluate the individual as an individual. Avoid humiliating or stereotyping families because of their social background.
Sources
Qur'an 49:13.