Here’s what I found. It’s a starting point, if you don’t already have all this!
Bernt Mathias Andersen was born 16 Apr 1883 at Hessevaagbakke farm (gard). View the parish register here (see line 21):http://www.arkivverket.no/URN:kb_read?idx_kildeid=8753&i...
Here are his siblings, all born at Hessevaagbakke:
Hans Andreas, b 30 Aug 1872
Ragnild Elise Katherine, b 23 Jan 1875
Reinarth Simon, b 3 May 1879
Their parents were:
Anders Hansen, born 3 July 1843 at Hessevaagbakke, the son of Hans Abelsen & Ragnild Andersdatter
Ragnild Juditha Larsdatter, born 15 Mar 1844 at Lisæter, the daughter of Lars Rasmussen & Elen Andersdatter
Hessevaagbakke (also Hesjevaagbakken) is in Rugsund sogn (local parish), Daviken herred (municipality) Sogn og Fjordane county, Norway
Lisæter is in Bremanger sogn & herred, Sogn og Fjordane, Norway
Anders and Ragnild were married on 1 Jul 1871 in Rugsund. View the parish register entry here (see line 2):http://www.arkivverket.no/URN:kb_read?idx_kildeid=8753&i...
Anders Hansen died 31 July 1887 at Hessevaagbakke (shown as “Bakken” in the register)
Ragnhild Larsdatter died 30 Mar 1892 at Hessevaagbakke
In the 1900 census:
Bernt & sister Elise are servants on Otteren farm (Rugsund, Daviken).
Reinert is a Telegrafbud, at Lilleøen telegrafstasjon, Vågan herred, Nordland county, Norway
Couldn't find Hans.
Reinart Simon Andersen Bakke emigrated 26 May 1903, destination “Glencos, Minnesota”, Dominion Line.
Bernt Mathias Andersen Bakke emigrated 29 Apr 1905, destination Minnesota USA, to family