Help in finding correct names and dates

[Nancy Jaderen]

I was searching birth records for Nils Fredrik Forsberg,b.11 Sept 1809 in Fellingsbro,Örebro,and found his parents to be Nils Forsberg and A.M. Bäckström.I could not find any information on them so I contacted a trainee at Uppsala archives.
This is what I was told. The mother was Anna Maria Rockström,b.in Rockhammer,Fellingsbro. I found 2 birthdates,19 April and 10 Sept. 1782.Which one is correct? Further searching I think I found her parents who are Jan or Johan Andersson Rockström with 2 birthdates noted,16 Aug and 21 Sept 1742.Which is correct? He married Carin Andersdotter in 1765 or 1766. I think she was born 26 May 1743,but I do not know where.I would like to get the dates corrected and more information on the parents.Thank you
Nancy Jaderen