MC
Mary Clarke — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this Mary Clarke across the 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 8-person household.
Age 50
b. ~1890
Female
Spouse
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-City-County, Missouri |
| Surname | Clarke |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis (city) |
| 1935 Residence (County) | St. Louis City |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | St Louis City |
| Est. Birth Year | ~1890 |
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 |
|---|---|---|---|---|
| James Clarke | Son | — | 21 | ~1919 |
| Patricia Clarke | Daughter | — | 9 | ~1931 |
| Martin Clarke | Son | — | 27 | ~1913 |
| Jos Clarke | Head | — | 53 | ~1887 |
| Joseph Clarke | Son | — | 23 | ~1917 |
| Mary Clarke | Spouse | — | 50 | ~1890 |
| Joan Clarke | Daughter | — | 7 | ~1933 |
| Cecelia Clarke | Daughter | — | 18 | ~1922 |
Census Appearances
1930
St Louis, …
Spouse, age 40
St Louis, Missouri · implied b. ~1890 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clarke |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 20 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
St.-Louis-City-County, Missouri
Spouse, age 50
St.-Louis-City-County, Missouri · implied b. ~1890 — 8 household members
| Surname | Clarke |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | St. Louis (city) |
| 1935 Residence (County) | St. Louis City |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Clarke across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Clarke
Spouse · 1940 · age 50 · b. ~1890 · Missouri
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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 — 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-t0627-02181-00169)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Warwick Harman | 50 | Head | Draftsman | Missouri |
| 42 | Laura Harman | 46 | Wife | — | Missouri |
| 43 | Dorothy Harman | 16 | Daughter | — | Missouri |
| 44 | Howard Mccully | 30 | Head | Accounting Clerk | Missouri |
| 45 | Eva Mccully | 27 | Wife | — | Missouri |
| 46 | Frank J. Huber | 27 | Head | Filling Station Attendant | Missouri |
| 47 | Marcella Huber | 27 | Wife | — | Missouri |
| 48 | Richard Huber | 1 | Son | — | Missouri |
| 49 | Laura Gillering | 45 | Mother-in-law | Housework | Missouri |
| 50 | Marion Gillering | 17 | Sister-in-law | — | Missouri |
| 51 | Peter M. Dooley | 43 | Head | Rate Clerk | Missouri |
| 52 | Catherine Dooley | 39 | Wife | — | Missouri |
| 53 | Eileen Dooley | 11 | Daughter | — | Missouri |
| 54 | James Dooley | 7 | Son | — | Missouri |
| 55 | Stephen Gradl | 46 | Head | Stationary Engineer | Germany |
| 56 | Elsie Gradl | 44 | Wife | — | Missouri |
| 57 | Dolores Gradl | 19 | Daughter | — | Missouri |
| 58 | Bernice Gradl | 16 | Daughter | — | Missouri |
| 59 | Thos. J. Martin | 55 | Head | Office Worker | Missouri |
| 60 | Mary Martin | 53 | Wife | — | Missouri |
| 61 | Thomas Mcauliffe | 51 | Brother-in-law | — | Missouri |
| 62 | Jos. M. Clarke | 53 | Head | Order Clerk | Missouri |
| 63 | Mary Clarke THIS PERSON | 50 | Wife | — | Missouri |
| 64 | Martin Clarke | 27 | Son | Accounting Clerk | Missouri |
| 65 | Joseph, Jr. Clarke | 23 | Son | Bookkeeper | Missouri |
| 66 | James Clarke | 21 | Son | Office Worker | Missouri |
| 67 | Cecelia Clarke | 18 | Daughter | Packer | Missouri |
| 68 | Patricia Clarke | 9 | Daughter | — | Missouri |
| 69 | Joan Clarke | 7 | Daughter | — | Missouri |
| 70 | Donald J. Thomson | 44 | Head | Sales | Missouri |
| 71 | Pearl Thomson | 41 | Wife | — | Illinois |
| 72 | Edw. H. Kuhlman | 51 | Head | Street Car Mechanic | Missouri |
| 73 | Clara Kuhlman | 47 | Wife | — | Missouri |
| 74 | Fern Kuhlman | 26 | Daughter | Secretary | Missouri |
| 75 | Fred Garch | 52 | Head | Painting Contractor | Missouri |
| 76 | Marie Garch | 52 | Wife | — | Missouri |
| 77 | Grace Garch | 27 | Daughter | Stenographer | Missouri |
| 78 | Norma Garch | 16 | Daughter | — | Missouri |
| 79 | Jean Garch | 13 | Daughter | — | Missouri |
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)