HALVORSDATTER IN NORWAY

Does anyone have any information about Anne Marie Halvorsdatter? i think she was born about 1827 she came out to Norsewood newzealand in 1872 on the hovding with her husband Johan Fredrik Mortensen and five children; Axel, Augusta, Fritjof, Hans and Morten .I have records of her in New Zealand however i want to find information about her in Norway (birth, marriage) and about her parents etc, which i so far havent been able to find. Thankyou.