Did you ever notice the number of non-Spanish names on the gravestones at the missions?
I have been through all the literature; hanta is not mentioned.
The Indian graves are unmarked; at many California missions thousands of individuals are frequently buried in a small area.
The details on Indian deaths come from the mission records, no gravestones.
You are grasping at straws. The "enlightenment" brought to California by the Spanish missionaries and soldiers doomed 90% of the people in the mission areas.
You might try this site: http://taylorandfrancis.metapress.com/(cmmjepbkkeo5o3n1wg3ewu45)/app/home/contribution.asp?referrer=parent&backto=issue,6,10;journal,13,24;linkingpublicationresults,1:104736,1 to see if you can get some up to date information.