How long ?
If newly married , he can divorce her and marry in some decent family. He knew all this before the wedding , then why did he go for it ?
He must have had some vested interest , in love for this girl ? Higher social status of the future in laws ?
He has to live with it now. He cannot change the mentality and attitudes of whole family, either he adopt to their ways or live with it all and stop complaining.
If he is not in love with his wife because of misgivings of her family shame on him.