TOPIC #1 Just wanted to say that I agree about ages in the census. I've always wondered if people did know their actual ages! Here's a primary source that is not perfect. TOPIC #2 Regarding the Pioneers of Madison Co. book, you definitely do have to be careful with the entries in that book. It is a guide only and you have to check and recheck other sources, as someone else said. To connect these 2 topics, "Pioneers" is a secondary source that is not perfect. To me, working on genealogy is like solving a crime - the preponderance of evidence and that kind of stuff!