So I have always been told there is two types of genealogy/family history research. There is the common type where you have proof, ie census records, death certificate, marriage licence. Then there is the type that you have no source documents and they call that mythology. Just recently there is a new type of research that has finally become cost efficient for the genealogy community to partake in, genetic research. This is the real scientific proof of your ancestors and we all carry it around with us in our DNA. While this new type of research can tell you the where, its still up to you to know the who and when.