Ground Pork BBQ Sandwiches

2 lbs. ground pork

1/2 C. onion, chopped

1 T. brown sugar

1 C. ketchup

1/4 C. BBQ sauce

1/4 t. dry mustard

1/3 t. celery salt

Brown meat; drain well.

Stir in the remaining ingredients. Put in crockpot, heat on low several hours.

Serve on buns.