Thank you for your input - I hadn't thought of that angle. This also will cause some research as to when/how long the Conquistadors were harrassing the Indians, and if there were any uprisings. They may have still been using this scare tactic into the 1700s.
Thanks again!
SGE
PS: Though we may be at eachother's throats occasionally, at least we typically base our arguments on something "real".