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Mary Murphy — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Louis-City-County, Missouri
Our Model Tree links this Mary Murphy across the 1920, 1930 and 1940 US Censuses in St.-Louis-City-County, Missouri (XGBoost, ~Confirmed), with identified parents John & Martha — first a daughter (b.~1918), then head of a 6-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 | MURPHY |
| Given Name | MARY |
| Relationship to Head | DAUGHTER |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | MISSOURI |
| 1935 Residence (City) | St. Louis |
| 1935 Residence (County) | St. Louis |
| Additional Details | |
| Occupation | SALES LADY |
| Industry | INFANTS WEAR |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 298 |
| Highest Grade | Hs 3 |
| 1935 Residence | SAME PLACE |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Occupation | Salesperson |
| Township / Ward | St Louis |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Murphy | Daughter | — | 28 | ~1912 |
| Lenora Murphy | Daughter | — | 26 | ~1914 |
| Mary Murphy | Daughter | — | 22 | ~1918 |
| Lenora Murphy | Head | — | 54 | ~1886 |
| Frank Murphy | Son | — | 13 | ~1927 |
| Edward Murphy | Son | — | 18 | ~1922 |
Census Appearances
1920
St Louis, …
Other, age 2
St Louis, Missouri · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | Mary |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
St Louis, …
Daughter, age 12
St Louis, Missouri · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| 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 — 6 household members
| Surname | MURPHY |
| Given Name | MARY |
| Relationship to Head | DAUGHTER |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | MISSOURI |
| 1935 Residence (City) | St. Louis |
| 1935 Residence (County) | St. Louis |
| Occupation | SALES LADY |
| Industry | INFANTS WEAR |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 298 |
| Highest Grade | Hs 3 |
| 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 Murphy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Murphy (~0.92 confidence) and mother Martha Murphy (~0.92 confidence) and mother Lenora Murphy (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Murphy
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Martha Murphy
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Lenora Murphy
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Murphy
Daughter · 1940 · age 22 · b. ~1918 · Missouri
★ You are viewing this record
Sibling
Edward Murphy
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Murphy
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lenora Murphy
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Murphy
Sibling · 1940 · age 13
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-t0627-02211-00245)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rebecca Kessler | 54 | HEAD | Blacksmith | RUSSIA |
| 2 | Isadore Kessler | 26 | SON | Salesman | MISSOURI |
| 3 | Celia Levis | 28 | LODGER | Sales Lady | MISSOURI |
| 4 | Sylvia Schmidt | 28 | LODGER | Cashier | MISSOURI |
| 5 | Gertrude Cohen | 27 | LODGER | Bookkeeper | MISSOURI |
| 6 | Allen Joseph | 35 | HEAD | Salesman | INDIANA |
| 7 | Margaret Joseph | 20 | WIFE | 0 | INDIANA |
| 8 | Gerson Joseph | 4 | SON | — | MISSOURI |
| 9 | Maury Joseph | 2 | SON | — | MISSOURI |
| 10 | Lucille Sikorski | 22 | SERVANT | Servant | MISSOURI |
| 11 | Sam Eichenberg | 55 | HEAD | Owner | RUSSIA |
| 12 | Lena Eichenberg | 55 | WIFE | — | RUSSIA |
| 13 | Paul Eichenberg | 35 | SON | Owner | MISSOURI |
| 14 | Manuel Gelfer | 32 | HEAD | Clerk | MISSOURI |
| 15 | Frieda N Gelfer | 32 | WIFE | — | MISSOURI |
| 16 | David E Gelfer | 5 | SON | — | MISSOURI |
| 17 | Robert A Gelfer | 0 | SON | — | MISSOURI |
| 18 | Mildred Omalia | 19 | SERVANT | Servant | MISSOURI |
| 19 | Lenora Murphy | 54 | HEAD | — | MISSOURI |
| 20 | Margaret Murphy | 28 | DAUGHTER | Nurse Maid | MISSOURI |
| 21 | Lenora Murphy | 26 | DAUGHTER | Dental Assistant | MISSOURI |
| 22 | Mary Murphy THIS PERSON | 22 | DAUGHTER | Sales Lady | MISSOURI |
| 23 | Edward Murphy | 18 | SON | Mail Clerk | MISSOURI |
| 24 | Frank Murphy | 13 | SON | — | MISSOURI |
| 25 | Cyril Chase | 40 | HEAD | Accountant | IOWA |
| 26 | Josephine Chase | 36 | WIFE | Sales Lady | MISSOURI |
| 27 | Flora M Lucas | 74 | MOTHER-IN-LAW | — | INDIANA |
| 28 | Louis Hiken | 54 | HEAD | Traveling Salesman | RUSSIA |
| 29 | Leah Hiken | 51 | WIFE | — | ARGENTINA |
| 30 | Eva Feld | 34 | DAUGHTER | — | MISSOURI |
| 31 | Alvin N Lasky | 15 | GRANDSON | — | MISSOURI |
| 32 | Ronald Lasky | 13 | GRANDSON | — | MISSOURI |
| 33 | Joan Feld | 8 | GRANDDAUGHTER | — | MISSOURI |
| 34 | Max Pernikoff | 53 | HEAD | Carpenter | RUSSIA |
| 35 | Lena Pernikoff | 51 | WIFE | — | RUSSIA |
| 36 | Sue Pernikoff | 27 | DAUGHTER | Sales Lady | MISSOURI |
| 37 | Alice Pernikoff | 24 | DAUGHTER | Stenographer | MISSOURI |
| 38 | Irwin Pernikoff | 22 | SON | Shipping Clerk | MISSOURI |
| 39 | Maurice Simon | 46 | HEAD | Salesman | MISSOURI |
| 40 | Goldie Simon | 44 | WIFE | — | MISSOURI |
Pedigree Summary
Mary + 4 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)