Have you noticed that some of your family lines have many DNA matches and others very little? My dad is seven-eighths 19th-century German, one-sixteenth Pennsylvania German (18th century) and one-sixteenth colonial American/British. I’ve noticed that my dad has many matches on his Pennsylvania German side. However, there are only a few matches on my dad’s 19th-century German ancestor lines. As much as we want our match list to tell us about our ancestors, we have...