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Mary Byrne — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this Mary Byrne across the 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 11-person household.
Age 22
b. ~1918
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-City-County, Missouri |
| Surname | Byrne |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis City |
| 1935 Residence (County) | St. Louis City |
| Additional Details | |
| Occupation | New worker |
| Hours Worked | 46 |
| Income (1939) | 0 |
| Highest Grade | C-4 |
| 1935 Residence | Same Place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | New Worker |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1918 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Byrne | Daughter | — | 15 | ~1925 |
| Harriet Byrne | Daughter | — | 11 | ~1929 |
| Eleanor Byrne | Daughter | — | 13 | ~1927 |
| Carole Byrne | Daughter | — | 5 | ~1935 |
| Mary Byrne | Daughter | — | 22 | ~1918 |
| John Byrne | Head | — | 47 | ~1893 |
| Thomas Byrne | Son | — | 9 | ~1931 |
| Robert Byrne | Son | — | 17 | ~1923 |
| James Byrne | Son | — | 6 | ~1934 |
| John Byrne | Son | — | 20 | ~1920 |
| Anna Byrne | Spouse | — | 45 | ~1895 |
Census Appearances
1930
St Louis, …
Daughter, age 12
St Louis, Missouri · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Byrne |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-City-County, Missouri
Daughter, age 22
St.-Louis-City-County, Missouri · implied b. ~1918 — 11 household members
| Surname | Byrne |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis City |
| 1935 Residence (County) | St. Louis City |
| Occupation | New worker |
| Hours Worked | 46 |
| Income (1939) | 0 |
| Highest Grade | C-4 |
| 1935 Residence | Same Place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Byrne across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Byrne
Daughter · 1940 · age 22 · b. ~1918 · Missouri
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Sibling
Harriet Byrne
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Byrne
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Byrne
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Byrne
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carole Byrne
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Byrne
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Byrne
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Byrne
Sibling · 1940 · age 6
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.-Louis-City-County, Missouri
Open full size
1940 US Federal Census — St.-Louis-City-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02196-00203)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John W. Gant | 13 | Head | — | Missouri |
| 42 | William E. Gant | 60 | Head | Poultry | Missouri |
| 43 | Mary J. Gant | 55 | Wife | — | Missouri |
| 44 | Jack, Jr. Albright | 17 | Nephew | — | Illinois |
| 45 | Mary Jane Albright | 10 | Niece | — | Missouri |
| 46 | Charles M. Hambright | 59 | Head | Dept. Manager | Georgia |
| 47 | Emma Hambright | 52 | Wife | — | Texas |
| 48 | Fannie Caldwell | 60 | Sister-in-law | — | Texas |
| 49 | Lee Kaysing | 65 | Head | — | Missouri |
| 50 | Jack Kaysing | 34 | Son | Dept. Manager | Missouri |
| 51 | Anna Remy | 54 | Head | Laundry Worker | Missouri |
| 52 | Herbert Rabin | 53 | Head | Salesman | Missouri |
| 53 | Emma Rabin | 51 | Wife | — | Missouri |
| 54 | Molly Bradshaw | 72 | Lodger | — | Missouri |
| 55 | John H. Byrne | 47 | Head | Dentist | Missouri |
| 56 | Anna M. Byrne | 45 | Wife | — | Iowa |
| 57 | Mary Jane Byrne THIS PERSON | 22 | Daughter | New Worker | Missouri |
| 58 | John H., Jr. Byrne | 20 | Son | — | Missouri |
| 59 | Robert C. Byrne | 17 | Son | — | Missouri |
| 60 | Margaret A. Byrne | 15 | Daughter | — | Missouri |
| 61 | Eleanor K. Byrne | 13 | Daughter | — | Missouri |
| 62 | Harriet M. Byrne | 11 | Daughter | — | Missouri |
| 63 | Thomas J. Byrne | 9 | Son | — | Missouri |
| 64 | James H. Byrne | 6 | Son | — | Missouri |
| 65 | Carole J. Byrne | 5 | Daughter | — | Missouri |
| 66 | Neil T. Melay | 41 | Head | Auditor | Missouri |
| 67 | Agnes V. Melay | 39 | Sister | — | Missouri |
| 68 | George F. Melay | 34 | Brother | Chief Clerk | Missouri |
| 69 | John M. Das | 36 | Lodger | Dentist | Missouri |
| 70 | Edgar G. Brands | 51 | Head | Editor | Illinois |
| 71 | Georgia Brands | 46 | Wife | — | Illinois |
| 72 | Dean Brands | 17 | Son | — | Illinois |
| 73 | Charles Fisher | 21 | Son-in-law | Salesman | Illinois |
| 74 | Jean Fisher | 17 | Daughter | — | Illinois |
| 75 | John H. Lesse | 49 | Head | Merchant Tailor | Missouri |
| 76 | Clare Lesse | 47 | Wife | — | Missouri |
| 77 | John H., Jr. Lesse | 24 | Son | Merchant Tailor | Missouri |
| 78 | Thomas H. Lesse | 22 | Son | Merchant Tailor | Missouri |
| 79 | Robert N. Lesse | 17 | Son | — | Missouri |
| 80 | Burton D. Bohannon | 63 | Head | Physician | Indiana |
Related Census Records
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)