Hi Bonnie,
On this website you can find the transcript for the Campbells Creek Cemetery here:
http://ngb.chebucto.org/Cemetery/cem-ca ... -stg.shtmlYou can also see listings for LaCosta on this site in the Stonepics Index here:
http://ngb.chebucto.org/Stonepics/stonepics-kl.shtmlYou will note that the Stonepics listing refers to "LACOSTA, Thaddeus (1938) & Angelina & others" which may mean his parents are listed on the stone. Though unlikely. It is more likely that his parents graves are not marked. You might want to check with the local cemetery committee to see if they have burial records to help.
Hope that helps.
Cheers,
JBishop