:salamext:
I've seen some balanced replies, and I've seen some emotional replies. Let's not get upset people.
Ok, I'll speak from my own experience then. From my home country, there are a lot of tribal conflicts. I was given the opportunity to be introduced to someone from a tribe that greatly conflicts with mine, but this person and their family are upon the Sunnah and do not believe in one tribe being superior to another tribe etc., and have no interest in tribes and such. I could have chosen to turn the person down because my father might not have liked the idea, or I could have spoken to him in a calm, humble and kind manner, in the way that I felt would be best to approach him and asked his advice and support if he so wished. I chose the second, and now I'm happily married and my father was and still is extremely happy with my husband, my marriage, my son and his grandson, and all the choices I've made in my marriage up until now. Infact, my father always insists that I've brought him a lot of happiness. Same with my husband's family.
There is no harm in trying, it could actually bring you and your family a lot of happiness. However, I always insisted that I would never even dream of marrying someone that my father was displeased with, and I can see you have the same attitude sister. Parents happiness does not come second, it comes first. Seriously, you have no idea how much trouble your parents went through for you, and you will not know until you become a parent and you will continue to keep learning about these trials every day of your child/ren's life/lives. However, you deserve to be happy too... so try your best to acheive both.
If it is meant to be, it will come to pass. If not, khayr... inshaa'Allaah better things are in store for you. But just remember, that if you give up something for the sake of Allaah, Allaah will grant you better.