My father and my mother were in fact cousins, as my grandmothers were sisters ("half sisters"). They had the same mother but different fathers. In addition to that we can find one more sister and one brother, the same mother as the two sisters already mentioned, but different
fathers. So, four children, one mother and four fathers. And, two of those children became a couple , got married and soon also the parents to me, my sister and my brother. I have some problems when trying to create my family tree. All the lines become a mess. How to solve this?
