Extract from the 1900 Census:
Name: Marvin R Berg
Age at last birthday: 3
Date of birth: Mar 1897
Birthplace: Minnesota
Race: white
Sex: male
Relationship to head-of-house: son
Home in 1900: Duluth Ward 7, Saint Louis, Minnesota
Address: 317 22nd Avenue West
Marital status: single
Able to read, write and speak English: no
Father's birthplace: Norway
Mother's birthplace: Norway
Occupation: none
Siblings living at home: Ida M (age 27), Olyne A (26), Agnes (20), Stella L (18), Laura F (13), Nina (11), and Sidney A (6)
Census place: Duluth Ward 7, Saint Louis, Minnesota; Roll: T623 790; Page: 12A; Enumeration District: 284
Date: 6 Jun 1900

Extract from the 1910 Census:
Name: Marvin R Berg
Age in 1910: 13
Estimated birth year: 1897
Birthplace: Minnesota
Race: white
Sex: male
Relationship to head of family: son
Home in 1910: Duluth Ward 7, Saint Louis, Minnesota
Address: 317 22nd Avenue West
Marital status: single
Able to speak English: yes
Able to read and write: yes
Father's birthplace: Norway
Mother's birthplace: Norway
Occupation: attending school
Siblings living at home: Augusta A (age 35) and Sidney A (17)
Census place: Duluth Ward 7, Saint Louis, Minnesota; Roll: T624_725; Page: 17B; Enumeration District: 184; Image: 668
Date: 28 Apr 1910

Extract from World War I Draft Registration Cards, 1917-1918:
Name: Marvin Rayner Berg
City: Duluth
County: Saint Louis
State: Minnesota
Birthplace: Duluth, Minnesota
Birth date: 24 Mar 1897
FHL roll number: 1675461
Draft board: 2
Address: 317 North 22nd Avenue West
Citizenship: United States
Father's birthplace: Trondheim, Norway
Employer: McClellan Paper Company
Where employed: 10-12 West Michigan Street
Nearest relative: Grethe Berg, mother
Address: 317 North 22nd Avenue West
Age: 21
Height: medium
Build: medium
Eyes: grey
Hair: dark brown
Physically disqualified: no
Date: 5 Jun 1918

Extract from the 1920 Census:
Name: Marvin R Berg
Age: 22
Estimated birth year: 1898
Birthplace: Minnesota
Race: white
Sex: male
Relationship to head of house: son
Home in 1920: Duluth, Saint Louis, Minnesota
Address: 317 22nd Avenue West
Marital status: single
Able to speak English: yes
Able to read and write: yes
Father's birthplace: Norway
Father's native tongue: Norwegian
Mother's birthplace: Norway
Mother's native tongue: Norwegian
Occupation: manager
Type of industry: paper company
Salary or wage worker: wages
Siblings living at home: Olyne A (age 45), Stella L Widner (37), and Nina F (30)
Census place: Duluth, Saint Louis, Minnesota; Roll: T625_859; Page: 3A; Enumeration District: 125; Image: 219
Date: 3 Jan 1920

Extract from the 1930 Census:
Name: Marvin R Berg
Age: 32
Estimated birth year: 1898
Birthplace: Minnesota
Race: white
Sex: male
Relation to head-of-house: brother
Living with: Ida Berg Newark, age 57
Home in 1930: Charlotte, Eaton, Michigan
Address: 106 Bostwick Avenue
Marital status: single
Education: able to speak English
Education: able to read and write
Fathers' birthplace: Norway
Mothers' birthplace: Norway
Military service: yes - world war
Occupation: machinist
Industry: automobile factory
Salary or wage worker: wages
Census place: Charlotte, Eaton, Michigan; Roll: 983; Page: ; Enumeration District: 9; Image: 411.0
Date: 2 Apr 1930

Extract from U.S. World War II Draft Cards Young Men, 1940-1947:
Name: Marvin Rayner Berg
Age: 44
Birth date: 25 Mar 1897
Birth place: Duluth, Minnesota
Race: white
Address: 116 East Elm Street. Lansing, Ingham, Michigan
Telephone: none
Name of person who will always know your address: Olyne A Berg. 2109 East Second Street, Duluth, Minnesota
Employer: Olsmobile Divisionof of General Motors Company
Place of employment: Lansing, Ingham, Michigan
Height: 5 feet 9 inches
Weight: 195
Eyes: gray
Hair: brown
Complexion: light
Other characteristics: not listed
Registration date: 16 Feb 1942

Extract from Michigan death certificate:
Name: Marvin R Berg
Age: 61
Birth date: 25 Mar 1897
Birthplace: Duluth, Minnesota
Race: white
Sex: male
Marital status: married
Spouse: Fannie E Berg
Address: 1212 River Street, Lansing, Ingham, Michigan
Occupation: tool grinder
Employer: Oldsmobile
Military service: WWI
SSN: 380-05-7747
Death date: 14 Dec 1958
Death place: Sparrow Hospital, Lansing, Ingham, Michigan
Cause of death: acute congestive heart failure
Father's name: Ole Berg
Mother's name: Grethe O Hooden [sic]
Informant: Mrs Marvin R Berg, 1212 River Street
Place of burial: Maple Hill Cemetery, Charlotte, Michigan
Date of burial: 17 Dec 1958

Marvin resided at his parents' home at 317 North 22nd Avenue West with his mother and sisters until he left for Charlotte, Michigan in 1927, age about 30. The Duluth city directory shows that in 1914-1915 he was working at the McCellan Paper Company. He held various jobs with paper supply companies over the years.
He went to training camp in the late part of World War I, but was discharged without going overseas.
The scrapbooks of Agnes Berg Rhode state that on 4 Aug 1918 he left for training school [presumably U.S. Army].
He was an ardent follower of baseball and played on local teams.
In late 1927 he went to live with his oldest sister, Ida A Newark in Charlotte, Michigan. He stayed and worked there for a few years until moving to Flint, Michigan where he was employed in an automobile factory until his death in 1958 at age 61.
He married Fannie White, a widow with one son, on 24 Nov 1944, when he was 47. They did not have any children.

Obituary from the "Herald" of Duluth, Minnesota dated 15 Dec 1958:
Marvin R. Berg, 61, Lansing, Mich., formerly of Duluth, died Saturday in a Lansing hospital. Mr. Berg was born in Duluth and graduated from Central high school about 1914. He left Duluth in 1928. He was a veteran of World War I and a member of Trinity Masonic Lodge in Duluth. Surviving are five sisters, Mrs. Olyne A. Berg, Mrs. Nina Roberts, Mrs. Stella Widner, Mrs. S. A. Rhode, all of Duluth, and Mrs. Laura E. Lambert, Virginia, and a brother, Sidney, Englewood [sic], Calif. Funeral services will be held Wednesday afternoon in Lansing.

He married Fannie Emma Summers 21 Nov 1944 in East Lansing, Ingham, Michigan.