I have in my database an Obadiah Saunders b 1800 d March 12, 1872 who married Catherine Rhodes about 1821.
His parents were Timothy Saunders b February 10, 1751/52 d January 07, 1838 and Martha Neily b 1751d May 01, 1832.
They were from Kings County Nova Scotia.
If any of this rings a bell drop me a line and I can give you more information. Hope this helps.