Hi John,
None of those names sound familiar now, but will keep a look out. Are you a member of Cornwall Fam Hist Society? Was exploring "Family History Online" via their web site yesterday. Unfortunately although in UK am not close enough to Cornwall to go in person but if I can help you at all from a distance, let me know. Can probably get to where records for Surrey are kept if of any use?
Dont suppose the names Delgardo (1600s) or Austin (1700s), both Cornwall, mean anything do they?
Alison