Marriage records & Parents

I am having a difficult time tracing the parents of Johannes Jonsen(1782-1835). He also used Johnsen and Joensen. I believe this is Johannes' marriage record to Mari Nilsdatter Grynmyr(1782-1845). http://www.arkivverket.no/URN:kb_read?idx_kildeid=9344&uid=ny&idx_side=-265 The parents are not listed in the record. I have found all Johannes and Mari's children. I have confirmed both of their deaths in parish records. Although I have not officially confirmed Johannes' birth in the records. I just cannot connect the dots back to Johannes's parents. I have poured over parish records over and over with no luck. This is the first I have seen the use of Gamme after Johannes' name. Anyone have any hints on what to do next? would appreciate any input at all. Thank You!