Here you go...
wrong deacon's bench.:gar-Bi
there are a lot of styles, some with storage in the seat. You could modify one of your swing designs and extend the back support and the arm rest support and create something worthy of being called a deacon's bench. The swing i believe you posted last would be a good one to use as a base.
some folks use the term deacon bench for short pews... i am looking at building something similar to that with some cedar i found at my grandfather's place. Please share what you find.