I posted a query at the Norwegian Digital Archives, like I said in a message earlier today. One helpful genealogist would like to know WHERE in Minnesota Anne Marie was born in 1894, maybe Albert and Anne T. were married there? She said the 1900-census have them both as emigrating in 1882, and married for six years.
She also found this - which I believe you allready have:
Anton Thomas Gravos, b. 28 May 1896, died 9. nov. 1946. born in Iowa, died in Alameda, SS# 558074860 Mothers maiden name: SKIEL, fathers name Gravos
And from Oregon death index:
Name: Gravos, Iver Osc County: Lane Death Date: 04 Mar 1987 Certificate: 87-04163 Spouse: Rebert Birth Date: 03 Nov 1900
Name: Gravos, Harold The County: Lane Death Date: 27 May 1971 Certificate: 71-07307 Spouse: Effie Birth Date: - Mar 1903
Name: Gravos, Effie Ellen County: Lane Death Date: 25 Nov 1987 Certificate: 87-21461 Spouse: Harold Birth Date: 26 Feb 1903