To marry someone based on their wealth will only bring sadness and pain on long term, because money isn't the decisive factor in a relationship to make it work. I believe any kind of passional relationship is moved by three basic pillars which maintain it for a long time. They are:

Physical attraction;
Moral attraction;
intellectual attraction.

If you have those three pillars inside a relationship everything else comes right after, including money and patrimony which can be built together, side by side. It's very admirable when the couple is united around the same goals and thrive in life helping each other.