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Margaret Mcnamara — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this Margaret Mcnamara across the 1920, 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed) — first a spouse (b.~1898), then head of a 5-person household.
Age 42
b. ~1898
Female
Spouse
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-City-County, Missouri |
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis City |
| 1935 Residence (County) | St. Louis City |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1898 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Mcnamara | Spouse | — | 42 | ~1898 |
| Thomas Mcnamara | Son | — | 8 | ~1932 |
| James Mcnamara | Son | — | 18 | ~1922 |
| Robert Mcnamara | Son | — | 14 | ~1926 |
| James Mcnamara | Head | — | 51 | ~1889 |
Census Appearances
1920
St Louis, …
Spouse, age 21
St Louis, Missouri · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | Marcella |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
St Louis, …
Spouse, age 32
St Louis, Missouri · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 22 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Mother Tongue | 66 |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-City-County, Missouri
Spouse, age 42
St.-Louis-City-County, Missouri · implied b. ~1898 — 5 household members
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis City |
| 1935 Residence (County) | St. Louis City |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Margaret Mcnamara across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Mcnamara
Spouse · 1940 · age 42 · b. ~1898 · Missouri
★ You are viewing this record
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
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1940 US Federal Census — St.-Louis-City-County, Missouri
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02181-00245)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Amelia Engelke | 63 | Mother | — | Missouri |
| 42 | A. J. Wildhaber | 52 | Head | Streetcar Conductor | Missouri |
| 43 | Lee D. Wildhaber | 42 | Wife | Beautician | Missouri |
| 44 | Kenneth Wildhaber | 25 | Son | Clerk | Missouri |
| 45 | George Reinert | 40 | Head | Salesman | Missouri |
| 46 | Sarah D. Reinert | 39 | Wife | — | Missouri |
| 47 | George Reinert | 13 | Son | — | Illinois |
| 48 | Donald Reinert | 7 | Son | — | Missouri |
| 50 | Henry D. Heimenz | 78 | Head | — | Illinois |
| 51 | Samuel Heimenz | 45 | Son | Machinist | Missouri |
| 52 | Catherine Heimenz | 42 | Daughter-in-law | — | Missouri |
| 53 | Orley Heimenz | 19 | Grandson | — | Missouri |
| 54 | Evandell Heimenz | 13 | Granddaughter | — | Missouri |
| 55 | Herman Steinkamp | 62 | Head | Baker | Illinois |
| 56 | Carrie Steinkamp | 62 | Wife | Baker'S Asst. | Illinois |
| 57 | Andrew Steinkamp | 22 | Son | Baker'S Asst. | Missouri |
| 58 | William Fleach | 41 | Head | Attendant | Missouri |
| 59 | Clara O. Fleach | 31 | Wife | — | Missouri |
| 60 | Calvin Fleach | 12 | Son | — | Missouri |
| 61 | Shirley Fleach | 4 | Daughter | — | Missouri |
| 62 | Anna D. Ratigan | 60 | Head | — | Irish Free State |
| 63 | John Burke | 30 | Son | Attendant | Missouri |
| 64 | Lucille Burke | 24 | Daughter | Assistant | Missouri |
| 65 | James Mcnamara | 51 | Head | Switchman | Missouri |
| 66 | Margaret Mcnamara THIS PERSON | 42 | Wife | — | Missouri |
| 67 | James Mcnamara | 18 | Son | — | Missouri |
| 68 | Robert Mcnamara | 14 | Son | — | Missouri |
| 69 | Thomas Mcnamara | 8 | Son | — | Missouri |
| 70 | Fred B. Gibbons | 32 | Head | Switchman | Missouri |
| 71 | Evelyn Gibbons | 24 | Wife | — | Missouri |
| 72 | Bernard Kruep | 49 | Head | Street Car Operator | Illinois |
| 73 | Cletus Kruep | 43 | Wife | Shoe Worker | Missouri |
| 74 | Herbert F. Ortwerth | 25 | Head | Internal Revenue | Missouri |
| 75 | Bernice M. Ortwerth | 24 | Wife | — | Missouri |
| 76 | T. A. Brenner | 35 | Head | Electrician | Missouri |
| 77 | Winnifred Brenner | 30 | Wife | — | Missouri |
| 78 | Theodore Brenner | 2 | Son | — | Missouri |
| 79 | John Allen | 41 | Head | Sales Manager | Missouri |
| 80 | Tillie Allen | 40 | 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)