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Mary Byrne — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jackson-County, Missouri
Our Model Tree links this Mary Byrne across the 1930 and 1940 US Censuses in Jackson-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jackson-County, Missouri |
| Surname | Byrne |
| Given Name | Mary Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Kansas City |
| 1935 Residence (County) | Jackson |
| Additional Details | |
| Highest Grade | G 6 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Kansas City |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Byrne | Daughter | — | 12 | ~1928 |
| Andrea Byrne | Daughter | — | 6 | ~1934 |
| Joseph Byrne | Head | — | 46 | ~1894 |
| Loretta Gent | Other | — | 46 | ~1894 |
| Joseph Byrne | Son | — | 11 | ~1929 |
| John Byrne | Son | — | 9 | ~1931 |
| Robert Byrne | Son | — | 4 | ~1936 |
| Mary Byrne | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Jackson, Missouri
Daughter, age 1
Jackson, Missouri · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Byrne |
| Given Name | Mary O |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | England |
| Mother's Birthplace | Canada |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Jackson-County, Missouri
Daughter, age 12
Jackson-County, Missouri · implied b. ~1928 — 8 household members
| Surname | Byrne |
| Given Name | Mary Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Kansas City |
| 1935 Residence (County) | Jackson |
| Highest Grade | G 6 |
| 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 12 · b. ~1928 · Missouri
★ You are viewing this record
Sibling
John Byrne
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Byrne
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Andrea Byrne
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Byrne
Sibling · 1940 · age 11
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 — Jackson-County, Missouri
Open full size
1940 US Federal Census — Jackson-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02172-00228)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Stephen Donovan | 9 | Son | — | Missouri |
| 2 | Martha Marie Donovan | 4 | Daughter | — | Missouri |
| 3 | Donovan | 52 | Father | Proprietor | Missouri |
| 4 | Wallace Tuttle | 61 | Head | Physician | Ohio |
| 5 | Mabel L. Tuttle | 56 | Wife | — | Illinois |
| 6 | Jane Tuttle | 18 | Daughter | — | Illinois |
| 7 | Matilda Weems | 53 | Head | — | Illinois |
| 8 | Mrs. Marie W. Curdy | 59 | Sister | — | Illinois |
| 9 | George W. Werries | 62 | Brother | Salesman | Illinois |
| 10 | Amos B. Werries | 57 | Brother | Salesman | Illinois |
| 11 | L. D. Lanning | 64 | Head | Proprietor | Illinois |
| 12 | Mrs. Elizabeth Dalton | 30 | Daughter | Sales Person | Missouri |
| 13 | E. Claude F. Landers | 38 | Head | Salesman | Kansas |
| 14 | Ruth K. Landers | 38 | Wife | — | Kansas |
| 15 | Jack Franklin Landers | 10 | Son | — | Missouri |
| 16 | Ollie Hall | 54 | Servant | Cook | Missouri |
| 17 | Cornelius B. Ratzlaff | 56 | Head | Practitioner | Russia |
| 18 | Minnie G. Ratzlaff | 50 | Wife | — | Kansas |
| 19 | Joseph F. Byrne | 46 | Head | Traveling Salesman | Missouri |
| 20 | Mary Irene Byrne | 45 | Wife | — | Missouri |
| 21 | Mary Margaret Byrne THIS PERSON | 12 | Daughter | — | Missouri |
| 22 | Joseph Jr. Byrne | 11 | Son | — | Missouri |
| 23 | John Francis Byrne | 9 | Son | — | Illinois |
| 24 | Andrea Marie Byrne | 6 | Daughter | — | Missouri |
| 25 | Robert Jerome Byrne | 4 | Son | — | Missouri |
| 26 | Loretta C. Gent | 46 | Sister-in-law | Payroll Clerk | Missouri |
| 27 | William K. Trimble | 66 | Head | Physician | Missouri |
| 28 | Bertha James Trimble | 61 | Wife | — | Michigan |
| 29 | Joseph W. Howard | 71 | Head | Physician | Ohio |
| 30 | Ellen V. Howard | 66 | Wife | — | Kansas |
| 31 | Walter P. Neff | 73 | Head | Editor | Indiana |
| 32 | Martha P. Neff | 64 | Wife | — | Kansas |
| 33 | James F. Cleary | 60 | Head | Vice President And General Manager | Illinois |
| 34 | Irene H. Cleary | 50 | Wife | — | Illinois |
| 35 | Wilbur Seibert | 46 | Head | Executive Vice-President | New York |
| 36 | Virginia Rigby Seibert | 44 | Wife | — | Missouri |
| 37 | Mitchell Rigby Seibert | 3 | Son | — | Missouri |
| 38 | Louella Refroe | 23 | Servant | Housemaid | Mississippi |
| 39 | George M. Hartmann | 74 | Head | Proprietor | Pennsylvania |
| 40 | Lillie M. Hartmann | 68 | Wife | — | Ohio |
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)