Need help researching Johnson family in Trogstad

I am new to this, so please bear with me, I know that my Great-grandfather Hans Johnson was born in Trogstad July 29, 1863, his father was Hans Kristian Johnson born 1833, not sure where. I have tried going through the sites listed but am not having any luck with on-line translators. Any and all suggestions would be helpful & appreciated. Hans Kristian Johnson was married to Karen Marie Hansdatter, Born 1833 Hans Johnson was married to Thora Braaten, Born August 29, 1874, They were married in 1892 in Waldcott, ND I have fairly good records for the family in the US. It all stops with Hans Kristian in Norway. Thank you, Tom Johnson