From Familysearch, LDS IGI:
OLE SVENDSEN Spouse: BIRTHE CHRISTENSDR
Marriage: 24 OCT 1820 Kristiansand, Vest-Agder, Norway
Svend <OLESEN> Birth: 08 Nov 1821 Place: Kristiansand, Vest-Agder
Father: Ole SVENSEN Mother: Birthe CHRISTIANSDR
SITZEL OLSEN Birth: 12 JAN 1824 Ostre Moland, Aust-Agder
Father: OLE SVENDSEN Mother: BIRTE CHRISTENSDR
Gunnild Marie Christening: 07 JUN 1829 Tromoy, Aust-Agder
Father: Ole Svendsen Barboe Mother: Birthe Christensdatter
Birthe - 23 JUN 1833 Tromoy, Aust-Agder
Ingeborg - 14 AUG 1836 Tromoy, Aust-Agder
Petter - 16 APR 1838 Tromoy, Aust-Agder
Fredrik - 15 SEP 1839 Tromoy, Aust-Agder
Ommund - 09 JAN 1842 Tromoy, Aust-Agder
Cathrine - 09 JAN 1842 Tromoy, Aust-Agder
Ommund Christening: 14 SEP 1845 Tromoy, Aust-Agder
Father: Ole Svendsen Barboe Mother: Birthe Christensdr
There is a Storhei farm in Øvrebø parish, north of Kristiansand.
Birte was probably from Tromøya, an island east of Arendal. Tromøya was a part of Østre Moland parish.
http://digitalarkivet.uib.no/cgi-win/webcens.exe?slag=visbas...http://www.aust-agder.museum.no/bilder/Kart%20Arendal.JPG