Maria Gustafva moved out of her household along with her illegitimate son to marry, as I suspected because there was a listing of a banns date for a marriage on the right side of the household examination record.
I found the marriage here.http://www.arkivdigital.net
Döderhult EI:2 (1861-1894) Image 26 (AID: v37984.b26, NAD: SE/VALA/00065)
The marriage was between Sven Gustaf Svensson (born 1844; living on page 359) and Maria Gustafva Olsdotter (born 1835; living on page 678).
The first banns was announced 3 October and the wedding took place 27 November 1869 in Döderhult parish.