This may come across as insensitive but still. Generally speaking generational hexes wouldn't really have a century old longevity. Usually, a hex is placed on a particular person and after their death the negative energy in which encapsulates them doesn't just move to the next family member. The power of the mind is the biggest blessing and also the biggest "hex" given to mankind. The belief in negativity surrounding you will attract it into your life, if you believe you are plagued with bad luck then it will follow you. This doesn't mean hexes aren't real, and in some cases they can be really quite nasty. I have ad my own experiences with hexes and curses after coming from a largely Gypsy heritage. If I was in your position, I would (as a Christian and a Wiccan) say a prayer to St. Michael the Archangel would be the first step in banishing all things evil. If this problem is not still resolved then drop me a message and I would be more than happy to help you figure it out. Thanks!
Based on what I know, the curse would have been taken off long before you were born. The energy would run out, unless that is, someone is actively still sending the curse to you. Unless an entity is still watching you and sending negative energy to you, it's likely that the curse has already run it's course. If you're not convinced, try putting up circle of salts or pray to the Norse Gods. Leave them some offerings (nothing illegal), and ask them to take off the curse.