Jacob Pedersen

In the 1801 census Jacob Pedersen is listed as being 11 years old. His parents are Peder Andersen and Ingeborg Stenersdtr. The gard/hus is Kiendalen. I think I found his birth record but not sure of the date. I think the actual birth date is 10 Jan 1790 which agrees with the census. Source information: Telemark county, Eidanger, Parish register (official) nr. 6 (1764-1814), Birth and baptism records 1790, page 62. I found a death record on FindAGrave which lists his birth on gravestone as 1789. He died in Scandinavia, Waupaca, WIsconsin. The name on the stone is Jacob Pedersen KjendalIn. Am I incorrect on his birth date? The years don't match. The last name on stone is very close to gard/hus name so I am thinking that They are the same person. Thanks for any help I may get.