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James Bird — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Wisconsin
Our Model Tree links this James Bird across the 1930 and 1940 US Censuses in Polk-County, Wisconsin (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 6-person household.
Age 12
b. ~1928
Male
Son
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Wisconsin |
| Surname | Bird |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | Hs 7 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Sterling Town |
| Est. Birth Year | ~1928 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| James Bird | Son | — | 12 | ~1928 |
| Patricia Bird | Daughter | — | 18 | ~1922 |
| Miles Bird | Son | — | 16 | ~1924 |
| Betty Bird | Daughter | — | 19 | ~1921 |
| Leo Bird | Head | — | 45 | ~1895 |
| Lydia Bird | Spouse | — | 43 | ~1897 |
Census Appearances
1930
Polk, Wisconsin
Son, age 2
Polk, Wisconsin · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bird |
| Given Name | James G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Polk-County, Wisconsin
Son, age 12
Polk-County, Wisconsin · implied b. ~1928 — 6 household members
| Surname | Bird |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Polk |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | Hs 7 |
| 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 James Bird across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Bird
Son · 1940 · age 12 · b. ~1928 · Wisconsin
★ You are viewing this record
Sibling
Miles Bird
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Bird
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Bird
Sibling · 1940 · age 18
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 — Polk-County, Wisconsin
Open full size
1940 US Federal Census — Polk-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04512-00741)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward Skone | 81 | Father | — | Norway |
| 2 | Anna Skone | 77 | Mother | — | Sweden |
| 3 | Axel Sornsen | 22 | Hired man | Labor | Denmark |
| 4 | Anna Swanson | 74 | Head | Farm | Sweden |
| 5 | Edwin Swanson | 35 | Son | Tractor Work | Wisconsin |
| 6 | Raymond E. Jensen | 24 | Head | Farm | Minnesota |
| 7 | Irene Jensen | 20 | Wife | — | Wisconsin |
| 8 | Janet Jensen | 0 | Daughter | 0 | — |
| 9 | Waldemar Madsen | 36 | Head | Farm | Minnesota |
| 10 | Caroline Madsen | 31 | Wife | — | Minnesota |
| 11 | Waldemar Madsen | 13 | Son | — | Minnesota |
| 12 | Merrill Madsen | 12 | Son | — | Minnesota |
| 13 | Duane Madsen | 11 | Son | — | Minnesota |
| 14 | Leon Madsen | 9 | Son | — | Wisconsin |
| 15 | Geneva Madsen | 6 | Daughter | 0 | — |
| 16 | Kala Madsen | 2 | Daughter | 0 | — |
| 17 | Arthur Swanson | 52 | Head | Farm | Minnesota |
| 18 | Ernest Swanson | 24 | Son | Labor | Wisconsin |
| 19 | Mildred Swanson | 19 | Daughter | Housework | Wisconsin |
| 20 | Hazel Swanson | 17 | Daughter | Typing | Wisconsin |
| 21 | Evelyn Thompson | 20 | Lodger | Teacher | Wisconsin |
| 22 | Leo Bird | 45 | Head | Farm | Minnesota |
| 23 | Lydia Bird | 43 | Wife | — | Wisconsin |
| 24 | Betty Bird | 19 | Daughter | Librarian | Minnesota |
| 25 | Patricia Bird | 18 | Daughter | Librarian | Minnesota |
| 26 | Miles Bird | 16 | Son | — | Minnesota |
| 27 | James Bird THIS PERSON | 12 | Son | — | Wisconsin |
| 28 | Thora Gullikson | 52 | Head | Farm | Norway |
| 29 | Walter Gullikson | 25 | Son | — | Wisconsin |
| 30 | Norman Gullikson | 23 | Son | Common Labor | Wisconsin |
| 31 | George W. Sornsen | 67 | Head | Farm | Wisconsin |
| 32 | Lena Sornsen | 61 | Wife | — | Denmark |
| 33 | Hans P. Hansen | 54 | Head | Farm | Wisconsin |
| 34 | Mathilda Hansen | 49 | Wife | — | Wisconsin |
| 35 | Earl Hansen | 25 | Son | Labor | Wisconsin |
| 36 | Elaine Hansen | 19 | Daughter | — | Wisconsin |
| 37 | Kenneth Hansen | 14 | Son | — | Wisconsin |
| 38 | Clyde Hansen | 11 | Son | — | Wisconsin |
| 39 | Albert O. Peterson | 51 | Head | Farm | Minnesota |
| 40 | Alice Peterson | 34 | Wife | — | Wisconsin |
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)