Hej Eva,
Here is information I found in the Church books on Genline.
Skomakaren Carl Olof Sundström was born 19/12-1813 in Hudviksvall. C:2 1801-1861, child #42, GID: 630.39.95500.
Carl Olof's parents were Jon Sundström and Catharina Lindroth.
Anna Christina Jonsdotter Östman was born 19/12- 1812 in Gränsjö, Gnarp. Birth record: C:3, Födde, Dop, 1757-1830, page 244, child #55.
(OBS!) In most of the HFL records it has her birth date shown as 10/2-1812 but her birth record shows 19/12 as her birth date)
Ana Christina's parents were Jon Hansson Östman born 6/10- 1787 and Kjerstin Andersdotter born 5/1- 1777.
HFL 1824-1829 AI:8A, page 36, GID: 1752.16.23600.
Jon Hansson Östman b 6/10- 1787
Kjerstin Andersdotter b 5/1- 1777
Children:
Anna Stina b 19/12- 1812, C:3, GID: 1752.25.99800, page 244, child #55
Ingrid b 28/12- 1815, C:3, GID: 1752.25.1000800, page 260, child #66
Anders b 1/12- 1820, C:3, GID: 1752.25.102800, page 294, child #55
Anna Stina Östman moved from Gnarp 21/10- 1835, Utflytning, 1785-1860, B:1, Gnarp, Gävleborgs län, GID: 1752.22.54100, #10.
Hope this helps!
Ha en bra dag!
Don