JW
John Wolfe — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dubuque-County, Iowa
Our Model Tree links this John Wolfe across the 1920, 1930 and 1940 US Censuses in Dubuque-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1878), then head of a 9-person household.
Age 62
b. ~1878
Male
Head
Born: Iowa
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Dubuque-County, Iowa |
| Surname | Wolfe |
| Given Name | John A. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Iowa |
| 1935 Residence (City) | Worthington Town |
| 1935 Residence (County) | Dubuque |
| Additional Details | |
| Occupation | Storekeeper |
| Industry | Own Store |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 156 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Storekeeper |
| Township / Ward | Worthington Town |
| Est. Birth Year | ~1878 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Rose Shuckert | Other | — | 75 | ~1865 |
| Mary Wolfe | Daughter | — | 24 | ~1916 |
| Rita Wolfe | Daughter | — | 19 | ~1921 |
| Eldon Wolfe | Son | — | 21 | ~1919 |
| Cyril Wolfe | Son | — | 17 | ~1923 |
| Adrian Wolfe | Son | — | 23 | ~1917 |
| Joan Wolfe | Daughter | — | 12 | ~1928 |
| John Wolfe | Head | — | 62 | ~1878 |
| Ruth Wolfe | Daughter | — | 15 | ~1925 |
Census Appearances
1920
Dubuque, Iowa
Head, age 42
Dubuque, Iowa · implied b. ~1878 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolfe |
| Given Name | John R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Luxemburg |
| Mother's Birthplace | Iowa |
| Occupation | Drayman |
| Industry | Town |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Dubuque, Iowa
Head, age 53
Dubuque, Iowa · implied b. ~1877 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolfe |
| Given Name | John A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 36 |
| Father's Birthplace | Luxemburg |
| Mother's Birthplace | Iowa |
| Occupation | Proprietor |
| Industry | General Store |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 9000 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Dubuque-County, Iowa
Head, age 62
Dubuque-County, Iowa · implied b. ~1878 — 9 household members
| Surname | Wolfe |
| Given Name | John A. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Iowa |
| 1935 Residence (City) | Worthington Town |
| 1935 Residence (County) | Dubuque |
| Occupation | Storekeeper |
| Industry | Own Store |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 156 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links John Wolfe across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Wolfe
Head · 1940 · age 62 · b. ~1878 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Dubuque-County, Iowa
Open full size
1940 US Federal Census — Dubuque-County, Iowa
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01158-00146)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elizabeth Lighthart | 57 | wife | — | Kansas |
| 42 | Dorothy Lighthart | 19 | daughter | — | Iowa |
| 43 | Margaret O. Tobin | 53 | head | Waitress | Iowa |
| 44 | Bernice Tobin | 27 | daughter | Restaurant Helper | Iowa |
| 45 | Lester W. Tobin | 15 | son | — | Iowa |
| 46 | John A. Wolfe THIS PERSON | 62 | head | Storekeeper | Iowa |
| 47 | Mary Wolfe | 24 | daughter | Store Helper | Iowa |
| 48 | Adrian Wolfe | 23 | son | Farm Laborer | Iowa |
| 49 | Eldon Wolfe | 21 | son | Farm Laborer | Iowa |
| 50 | Rita Wolfe | 19 | daughter | Housework | Iowa |
| 51 | Cyril Wolfe | 17 | son | Farm Laborer | Iowa |
| 52 | Ruth Wolfe | 15 | daughter | — | Iowa |
| 53 | Joan Wolfe | 12 | daughter | — | Iowa |
| 54 | Rose Shuckert | 75 | aunt | — | Iowa |
| 55 | Florence A. Jasper | 47 | head | Housework | Iowa |
| 56 | Donald O. Jasper | 19 | son | Farm Labor | Iowa |
| 57 | Celestine J. Jasper | 17 | son | Moving Truck | Iowa |
| 58 | Irwin J. Valentine | 22 | head | Body & Fender Man | Iowa |
| 59 | Lelia Valentine | 19 | wife | — | Iowa |
| 60 | Irwin Lee Valentine | 1 | son | — | Iowa |
| 61 | Joseph C. Rubner | 32 | head | Miller | Iowa |
| 62 | Lucille Rubner | 24 | wife | — | Iowa |
| 63 | Robert Rubner | 2 | son | — | Iowa |
| 64 | Francis Rubner | 2 | son | — | Iowa |
| 65 | George A. Katz | 41 | head | Carpenter | Iowa |
| 66 | Mary Dora Katz | 42 | wife | — | Iowa |
| 67 | Chester Katz | 18 | son | New Worker | Iowa |
| 68 | Mary Theresa Katz | 16 | daughter | — | Iowa |
| 69 | Rita Mae Katz | 15 | daughter | — | Iowa |
| 70 | Gerald J. Katz | 13 | son | — | Iowa |
| 71 | Melvin F. Katz | 11 | son | — | Iowa |
| 72 | Albert G. Katz | 9 | son | — | Iowa |
| 73 | Vincent P. Katz | 7 | son | — | Iowa |
| 74 | Jean Ann Katz | 5 | daughter | — | Iowa |
| 75 | Teresa Anna Katz | 82 | mother | — | Iowa |
| 76 | Regina M. Katz | 43 | sister | Telephone Oper. | Iowa |
| 77 | John H. Seppe | 66 | head | Janitor | Iowa |
| 78 | Anagunda Seppe | 66 | wife | — | Iowa |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)