Bearing in mind how, over the years, names often become mis-translated or even changed, I'm finding that for the surname Hoekin the information forthcoming has been spelt Hocking.  Funnily enough I've found this previously when looking for a Hocking on behalf of someone else it had been transcribed as Hawkin.  Now with this in mind, and the location of St Keverne, I'm wondering if this one might fit:
  
        |    |    |    | 
     Event(s): | 
    |  Birth:  |  
   |  Christening:  |      | 30 MAR 1777   |  Cury, Cornwall, England |    | 
    |  Death:  |  
   |  Burial:  | 
     
  
 Cury isn't that far from St Keverne and even in those days people did move from place to place between their birth and marriage.
  
 Have a look at this and see what you think.
  
 Kay
 Manager