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Mary Bird — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sangamon-County, Illinois
Our Model Tree links this Mary Bird across the 1930 and 1940 US Censuses in Sangamon-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 6-person household.
Age 43
b. ~1897
Female
Spouse
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sangamon-County, Illinois |
| Surname | Bird |
| Given Name | Mary J |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Sangamon |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Housewife |
| Industry | At Home |
| Class of Worker | NP |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Housewife |
| Township / Ward | Springfield |
| Est. Birth Year | ~1897 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Bird | Daughter | — | 21 | ~1919 |
| Virginia Bird | Daughter | — | 15 | ~1925 |
| Bobbie Bird | Son | — | 7 | ~1933 |
| Mary Bird | Spouse | — | 43 | ~1897 |
| Andrew Bird | Head | — | 46 | ~1894 |
| George Bird | Son | — | 19 | ~1921 |
Census Appearances
1930
Sangamon, Illinois
Spouse, age 33
Sangamon, Illinois · implied b. ~1897 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bird |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Alien |
| Year of Immigration | 1911 |
| Age at First Marriage | 18 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Sangamon-County, Illinois
Spouse, age 43
Sangamon-County, Illinois · implied b. ~1897 — 6 household members
| Surname | Bird |
| Given Name | Mary J |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Sangamon |
| Naturalization Status | Naturalized |
| Occupation | Housewife |
| Industry | At Home |
| Class of Worker | NP |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Mary Bird across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Bird
Spouse · 1940 · age 43 · b. ~1897 · Illinois
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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 — Sangamon-County, Illinois
Open full size
1940 US Federal Census — Sangamon-County, Illinois
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00885-00119)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cecil M Winterbauer | 43 | Head | House Wife | Illinois |
| 42 | Florence L Winterbauer | 18 | Daughter | Machine Runner | Illinois |
| 43 | Virgil Winterbauer | 32 | Head | Delivery Boy | Illinois |
| 44 | Ruth Winterbauer | 25 | Wife | House Wife | Illinois |
| 45 | George A Young | 72 | Head | — | Illinois |
| 46 | Emma M Young | 72 | Wife | House Wife | Illinois |
| 49 | David A Knox | 32 | Head | Miner | Illinois |
| 50 | Jennie M Knox | 24 | Wife | House Wife | Illinois |
| 51 | Mary E Young | 54 | Head | House Wife | Illinois |
| 52 | Arthur G Young | 17 | Son | Bell Hop | Illinois |
| 53 | Jesse M Johnson | 29 | Head | Supply Salesman | Illinois |
| 54 | Louise M Johnson | 28 | Wife | House Wife | Illinois |
| 55 | Mike D Johnson | 3 | Son | — | Illinois |
| 56 | Ross G Brooks | 49 | Head | Matron | Illinois |
| 57 | Martin H Brooks | 51 | Husband | Laborer | Illinois |
| 58 | Robt M Brooks | 24 | Son | Laborer | Illinois |
| 59 | Andrew J Bird | 46 | Head | Painter | New York |
| 60 | Mary J Bird THIS PERSON | 43 | Wife | Housewife | England |
| 61 | Mary J Bird | 21 | Daughter | Stenog | Illinois |
| 62 | George Bird | 19 | Son | — | New York |
| 63 | Virginia O Bird | 15 | Daughter | — | Springfield |
| 64 | Bobbie L Bird | 7 | Son | — | Illinois |
| 65 | Wallace E Golden | 41 | Head | Semi-Worker | Kentucky |
| 66 | Nettie M Golden | 34 | Wife | House Wife | Kentucky |
| 67 | Eileen R Golden | 12 | Daughter | — | Florida |
| 68 | Sarah H Golden | 10 | Daughter | — | Springfield |
| 69 | Carol E Golden | 5 | Son | — | Illinois |
| 70 | Myra A Golden | 1 | Daughter | — | Illinois |
| 71 | Jennie Mrs Murphy | 72 | Mother-in-law | — | Kentucky |
| 72 | Virginia Brake | 69 | Head | Housekeeper | Illinois |
| 73 | Evert H Brown | 21 | Head | Laborer | Illinois |
| 74 | Nilberta M Brown | 19 | Wife | House Wife | Illinois |
| 75 | Thomas E Brown | 2 | Son | — | Illinois |
| 76 | Payton K Fugate | 37 | Head | Telephone Engineer | Illinois |
| 77 | Juliet M Fugate | 32 | Wife | House Wife | Illinois |
| 78 | Kendall M Fugate | 2 | Son | — | Illinois |
| 79 | Ernest G Young | 32 | Head | Youngest Law | Illinois |
| 80 | Harriet C Young | 27 | Wife | House Wife | Missouri |
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)