Today I am writing a very simple post with three important rules of genealogy that should be obvious.
First rule of Genealogy: When the baby was born, the mother was there.
Second rule of Genealogy: You can't find what's not there.
Third Rule of Genealogy: Everyone dies.
For more elaboration on these rules please consult Genealogy Star, an excellent genealogy blog written by James Tanner. Genealogy Star