I am finding names of people I'm looking for claimed as headrights in records of land granted in Virginia Colony in the 1600s. But the dates of the claims don't always make sense with what I know, or surmise, about the person claimed. Was there a minimum age at which a person could be claimed? Did they have to be at least 16, 18, or --? If anyone knows, this could help me confirm I'm finding the actual people I'm looking for.