A significant challenge for archaeologists seeking information about the 1587 colonists is that many common artifacts could plausibly originate from the 1585 colony, or from Native Americans who traded with other European settlements in the same era. Andrew Lawler suggests that an example of a conclusive find would be female remains (since the 1585 colony was exclusively male) buried according to Christian tradition (supine, in an east–west orientation) which can be dated to before 1650 (by which point Europeans would have spread throughout the region). However, few human remains of any kind have been discovered at sites related to the Lost Colony.