Found this obit for Sarah. No burial location found. Have not found anything on Joshua or James & Cynthia Curtis.
From the Dec. 24, 1885 Robertson Co., KY Tribune Democrat
At the residence of her son, Charles Carpenter, near Kentontown, Oct. 28, 1885, Mrs. Sarah Carpenter, of dropsy, in the 59th year of her age. She was the mother of four sons and two daughters.