I finally heard back about the documents required for legal marriage in jamaica and what to do about birth certificates that don't have the father's name... It looks like you need to send a copy of the bride and grooms birth certificate notarized in addition the a notarized letter stating the father's name. Here's the response from the coordinator.
We are from Ontario Canada and our birth certificates do not have the fathers name. Can you please let me know what is required in this case?
Attach a letter on each birth certificate stating the names of the fathers and have that letter notarized .
Hope this helps!