Extract from the 1910 Census:
Name: Kenneth I Altenburg
Age in 1910: 8/12
Estimated birth year: 1909
Birthplace: Wisconsin
Race: white
Sex: male
Relationship to head of family: son
Home in 1910: Plover, Portage, Wisconsin
Marital status: single
Father's birthplace: Wisconsin
Mother's birthplace: Wisconsin
Occupation: none
Siblings living at home: Mabel C (age 19) and Elta B (18)
Census place: Plover, Portage, Wisconsin; Roll: T624_1733; Page: 12A; Enumeration District: 58; Image: 893
Date: 30 Apr 1910

Extract from the 1920 Census:
Name: Kenneth Altenburg
Age: 10
Estimated birth year: 1910
Birthplace: Wisconsin
Race: white
Sex: male
Relationship to head of house: son
Home in 1920: Plover, Portage, Wisconsin
Address: Wisconsin Highway # 10
Marital status: single
Able to speak English: yes
Able to read and write: yes
Father's birthplace: Wisconsin
Mother's birthplace: Wisconsin
Occupation: attending school
Siblings living at home: none
Census place: Plover, Portage, Wisconsin; Roll: T625_2011; Page: 1B; Enumeration District: 73; Image: 40
Date: Jan 1920

Extract from the 1930 Census:
Name: Kenneth Altenburg
Age: 20
Estimated birth year: 1910
Birthplace: Wisconsin
Race: white
Sex: male
Relation to head-of-house: son
Home in 1930: Plover, Portage, Wisconsin
Living with: Frank and Ida Altenburg, ages 59 and 58
Marital status: married
Age at first marriage: 19
Education: able to speak English
Education: able to read and write
Fathers' birthplace: Wisconsin
Mothers' birthplace: Wisconsin
Military service: no
Occupation: farm laborer
Industry: general farm
Salary or wage worker: not paid
Census place: Plover, Portage, Wisconsin; Roll: 2606; Page: ; Enumeration District: 22
Date: 10 Apr 1930

Extract from the 1940 Census:
Name: Kenneth Altenburg
Age: 30
Estimated birth year: 1910
Birthplace: Wisconsin
Race: white
Sex: male
Relation to head-of-house: head
Home in 1940: Plover, Portage, Wisconsin
Marital status: married
Highest grade of school completed: 8
Home owned or rented: rented
Monthly rental: $5
City of residence in 1935: rural, Portage, Wisconsin
Occupation: laborer
Industry: WPA
Salary or wage worker: wages
Number of weeks worked in 1939: 50
Amount of money wages or salary: $500
Has other income of more than $50: yes
At work during week of March 24-30: yes
Number of hours worked: not listed
Census place: Plover, Portage, Wisconsin; Roll: T627_4513; Page: 19A; Enumeration District: 49-23
Date: 6 May 1940

Extract from the 1950 Census:
Name: Kenneth I Altenburg
Age: 40
Estimated birth year: 1910
Birthplace: Wisconsin
Race: white
Sex: male
Relation to head-of-house: head
Home in 1950: Plover, Portage, Wisconsin
Address: 2¾ miles south
Marital status: married
Living on farm: yes
Occupation: none
Census place: Plover, Portage, Wisconsin
Date: 8 Apr 1950

Obituary from the "Journal" of Stevens Point, Wisconsin dated 16 Mar 1973:
Kenneth Altenburg
Kenneth I. Altenburg, 63, Route 1, Plover, died suddenly at 9:30 p.m. Thursday at St. Michael's Hospital. He had been stricken earlier at his home and was taken to the hospital by ambulance.
A lifelong resident of the Town of Plover, he was born there on July 16, 1909, a son of Mr. and Mrs. Frank Altenburg. He attended schools in Portage County and on Sept. 22, 1928, he married Marion Stratton at Waupaca.
He operated a dairy farm with his father for a time and later was employed at Lippman Furniture Co. and then the Pagel Milling Co. Then for 25 years he owned and operated Altenburg's Farm Market and Greenhouses in the Town of Plover. He retired three years ago due to ill health.
Mr. and Mrs. Altenburg had recently returned from a two months visit in the south.
He was a member of the Modern Woodmen of America and the Sherwood Community Club.
Mr. Altenburg is survived by his wife; four sons, Eugene, of Mosinee, Harold, of Wisconsin Rapids; Neal, of Hancock, and Thomas, of Plainfield; two daughters, Mrs. Frank (Olive) Sparhawk, Beloit, and Mrs. Kenneth (Mary) Steinke, Route 1, Plover; 20 grandchildren, and two sisters, Mrs. Mabel Calkins, Route 1, Plover, and Mrs. Alta Emmes, Wisconsin Rapids.
He was preceded in death by his parents.
Friends may call at the Boston Funeral Home after 3 p.m. on Sunday.
Funeral services will be held at 2 p.m. Monday at Plover United Methodist Church, with the Rev. Lyndon Viel officiating. Burial will be made in the Maine Cemetery. A memorial has been established in his name.

Obituary from the "Daily Tribune" of Wisconsin Rapids, Wisconsin dated 17 Mar 1973:
Stevens Point - Kenneth I. Altenburg, 63, Rt. 1, Plover, died at 9:30 p.m. Thursday at St. Michael's Hospital, Stevens Point, following a heart attack at his home.
Services will be held at 2 p.m. Monday at Plover United Methodist Church with the Rev. Lyndon Viel officiating. Burial will be in Maine Cemetery, town of Plover.
Mr. Altenburg was born July 16, 1909, in the town of Plover, the son of Mr. and Mrs. Frank Altenburg. He married Marion Stratton Sept. 22, 1928, at Waupaca. They resided in the Plover area since that time where he was owner and operator of Altenburg's Farm Market and Greenhouses. He retired three years ago due to ill health.
Survivors include four sons, Eugene, Mosinee; Harold, Wisconsin Rapids; Neal, Hancock, and Thomas, Plainfield; two daughters, Mrs. Frank Sparhawk, Beloit, and Mrs. Kenneth Steinke, Plover; two sisters, Mrs. Mabel Calkins, Plover, and Mrs. Alta Emmes, Wisconsin Rapids; and 20 grandchildren.
Friends may call at the Boston Funeral Home, Stevens Point, from 3 p.m. Sunday and at the church from 11 a.m. Monday until time of services.

He married Marion Merna Stratton 22 Sep 1928 in Waupaca, Waupaca, Wisconsin.