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John Mann — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Croix-County, Wisconsin
Our Model Tree links this John Mann across the 1930 and 1940 US Censuses in St.-Croix-County, Wisconsin (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 6-person household.
Age 11
b. ~1929
Male
Son
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Croix-County, Wisconsin |
| Surname | Mann |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Prairie Farm |
| 1935 Residence (County) | Barron |
| Additional Details | |
| Industry | S |
| Highest Grade | 6 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Troy Township |
| Est. Birth Year | ~1929 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Isaac Mann | Son | — | 15 | ~1925 |
| Bernice Mann | Daughter | — | 13 | ~1927 |
| John Mann | Son | — | 11 | ~1929 |
| Richard Mann | Son | — | 3 | ~1937 |
| Isaac Mann | Head | — | 40 | ~1900 |
| Gertrude Mann | Spouse | — | 37 | ~1903 |
Census Appearances
1930
St Croix, …
Other, age 1
St Croix, Wisconsin · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mann |
| Given Name | John A. |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
St.-Croix-County, Wisconsin
Son, age 11
St.-Croix-County, Wisconsin · implied b. ~1929 — 6 household members
| Surname | Mann |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Prairie Farm |
| 1935 Residence (County) | Barron |
| Industry | S |
| Highest Grade | 6 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Mann across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mann
Son · 1940 · age 11 · b. ~1929 · Wisconsin
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Sibling
Isaac Mann
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Mann
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Mann
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — St.-Croix-County, Wisconsin
Open full size
1940 US Federal Census — St.-Croix-County, Wisconsin
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-04522-00691)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elizabeth Bremmer | 17 | Daughter | — | Wisconsin |
| 42 | Ann Bremmer | 15 | Daughter | — | Wisconsin |
| 43 | Gilmore Solberg | 25 | Head | Farmer | Minnesota |
| 44 | August Roettger | 37 | Head | Farmer | Wisconsin |
| 45 | Dora Roettger | 39 | Wife | — | Wisconsin |
| 47 | Dorothy Roettger | 11 | Daughter | — | Wisconsin |
| 48 | August Roettger | 8 | Son | — | Wisconsin |
| 49 | Charles Smith | 40 | Head | Farm Manager | Wisconsin |
| 50 | Clifford Smith | 38 | Brother | Salesman | Wisconsin |
| 51 | La Verne Smith | 21 | Sister-in-law | — | Wisconsin |
| 52 | Kathleen Smith | 2 | Niece | — | Wisconsin |
| 53 | Rita Smith | 0 | Niece | — | Wisconsin |
| 54 | Leo Rohl | 71 | Head | Farmer | Wisconsin |
| 55 | Mary Rohl | 60 | Wife | — | Wisconsin |
| 56 | Marjorie Fable | 3 | Grandchild | — | Wisconsin |
| 57 | John Nelson | 65 | Hired Hand | Farm Hand | Wisconsin |
| 58 | Benjamin Rohl | 63 | Head | Farmer | Wisconsin |
| 59 | Mathew Rohl | 67 | Brother | — | Wisconsin |
| 60 | Joseph Rohl | 72 | Head | Farmer | Wisconsin |
| 61 | Ambra Rohl | 56 | Wife | — | Wisconsin |
| 62 | Alfred Larsen | 29 | Head | Farmer | Wisconsin |
| 63 | Helen Larsen | 24 | Wife | — | Wisconsin |
| 64 | Isaac Mann | 40 | Head | Farmer | Missouri |
| 65 | Gertrude Mann | 37 | Wife | — | Wisconsin |
| 66 | Isaac Mann | 15 | Son | Farmer | Wisconsin |
| 67 | Bernice Mann | 13 | Daughter | — | Wisconsin |
| 68 | John Mann THIS PERSON | 11 | Son | — | Wisconsin |
| 69 | Richard Mann | 3 | Son | — | Wisconsin |
| 70 | Gordon Knott | 21 | Head | Farmer | Wisconsin |
| 71 | Dennis Langness | 22 | Hired Hand | Farm Hand | Montana |
| 72 | Florence Langness | 22 | Housekeeper | Housekeeper | Wisconsin |
| 73 | Donovan Langness | 1 | Lodger | — | Wisconsin |
| 74 | Gloria Langness | 0 | Lodger | — | Wisconsin |
| 75 | Leo Kricel | 51 | Head | Farmer | Wisconsin |
| 76 | Clara Kricel | 48 | Wife | — | Wisconsin |
| 77 | Ethel Kricel | 19 | Daughter | Housekeeper | Wisconsin |
| 78 | John Lundy | 55 | Head | Farmer | Wisconsin |
| 79 | Susie Lundy | 39 | Wife | — | Poland |
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)