SKORSTAD TO USA

I'm looking for information on CHRISTIAN SKORSTAD and his wife, ELLEN (BROSTAD) SKORSTAD, who came to America in 1868. They had one child I know about, born in Norway. MARIE SKORSTAD. She was born near Vardahl, Christiania 7 Aug. 1865. Christian was born in 1819 and Ellen in 1821. The family settled in Pigeon Township, Wisconsin. Thank you, *JJ*