I looked more carefully at your family group sheet information and now I see some gaps! for spouses for the youngest Lindberg children.
For Minnesota marriages, see www.mncounty.org Not a complete index. This site is sometimes referred to as MOMS (Minnesota Online Marriage System).
Oscar Lindberg Born 30 November 1880 Dassel, Meeker, Minnesota MARRIED Ester Sjoquist 06 July 1909 in Meeker County, Minnesota Oscar died 27 Nov 1911 Dassel, Meeker, Minnesota
This could be Oscar’s wife with her parents: 1900 Ellsworth Township, Meeker, Minnesota Alfred Sjoquist 46 b Sweden Betsy Sjoquist 31 b Sweden Ester Sjoquist 9 b Minnesota Siblings Ella 7, Henry 5, Arthur 3, Lillian 0
Here again is 1910 (posted above) 1910 Dassel, Meeker, Minnesota Ellen Lundberg (as transcribed on Family Search) age 67, widow, born in Sweden John 21 Oscar 26, married Esther 19, married [born about 1891] Hazel 9 months, granddaughter
Found an Emil Lindberg who married a Hilda Woldahl 24 August 1931 in Clay County MN. So far I can't tell if it's the right guy (Emil Cart Lindberg). Many Carl Lindbergs get married on MOMS; no Cart Lindbergs.
Found a John P. Lindberg married Ida Reus in Meeker County, Minnesota 28 June 1911.