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Mary Murphy — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Mary Murphy across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a daughter (b.~1912), then head of a 6-person household.
Age 28
b. ~1912
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Murphy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Tubing Co |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 624 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Stenographer |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1912 |
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 |
|---|---|---|---|---|
| Mary Murphy | Daughter | — | 28 | ~1912 |
| Thomas Murphy | Head | — | 52 | ~1888 |
| David Murphy | Son | — | 27 | ~1913 |
| John Murphy | Son | — | 29 | ~1911 |
| Thomas Murphy | Son | — | 25 | ~1915 |
| Bridget Murphy | Spouse | — | 50 | ~1890 |
Census Appearances
1920
San Francisco, …
Daughter, age 8
San Francisco, California · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Daughter, age 18
San Francisco, California · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Daughter, age 28
San-Francisco-County, California · implied b. ~1912 — 6 household members
| Surname | Murphy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Stenographer |
| Industry | Tubing Co |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 624 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Thomas Murphy (~0.92 confidence) and father Thomas Murphy (~0.92 confidence) and father Matthew Murphy (~0.92 confidence) and mother Bridget Murphy (~0.92 confidence) and mother Ellen Murphy (~0.92 confidence) and mother Bridget Murphy (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Murphy
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Thomas Murphy
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Matthew Murphy
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Bridget Murphy
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Ellen Murphy
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Bridget Murphy
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Murphy
Daughter · 1940 · age 28 · b. ~1912 · California
★ You are viewing this record
Sibling
Thomas Murphy
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Murphy
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Murphy
Sibling · 1940 · age 27
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 — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00309-00488)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sadie Baker | 33 | Wife | — | California |
| 42 | Robert Baker | 13 | Son | — | California |
| 43 | John O'Brien | 79 | Head | — | Eire |
| 44 | William J. O'Brien | 42 | Son | Workman | California |
| 45 | Josephine A. O'Brien | 34 | Daughter | Teacher | California |
| 46 | Emil T. Heckmann | 37 | Head | Shipping Clerk | Pennsylvania |
| 47 | Mabel Heckmann | 53 | Wife | — | California |
| 48 | Timothy Leahy | 53 | Head | Conductor | Eire |
| 49 | Mary Leahy | 50 | Wife | — | Eire |
| 50 | Margaret Leahy | 25 | Daughter | Secretary | California |
| 51 | Timothy Leahy | 23 | Son | Pay Clerk | California |
| 52 | John Leahy | 13 | Son | — | California |
| 53 | Donald Robt Dodds | 30 | Head | Installer | Installment | Iowa |
| 54 | Elizabeth Dodds | 31 | Wife | — | Iowa |
| 55 | Stanley Woodrow Bell | 25 | Head | Laborer | Minnesota |
| 56 | Mary Bell | 25 | Wife | — | California |
| 57 | Marilyn Bell | 0 | Daughter | — | California |
| 58 | Anna M. Bellesen | 69 | Head | — | Norway |
| 59 | Oliver B. Bellesen | 39 | Son | — | California |
| 60 | Fredrik Appelgren | 41 | Head | Ventilating Salesman | Oregon |
| 61 | Vivian Appelgren | 35 | Wife | Bookkeeper | Wisconsin |
| 62 | Maurice Oales | 38 | Head | Laundry Worker | France |
| 63 | Elise Oales | 34 | Wife | Laundry Worker | France |
| 64 | Renee Oales | 9 | Daughter | — | California |
| 65 | Maurice Roger Oales | 5 | Son | — | California |
| 66 | William C. Bollen | 36 | Head | Salesman | California |
| 67 | Marjorie Bollen | 30 | Wife | Salesman | Oregon |
| 68 | Benjamin Early | 43 | Head | Post Office Clerk | North Carolina |
| 69 | Nell E. Early | 46 | Wife | — | California |
| 70 | Thomas Murphy | 52 | Head | Policeman | Eire |
| 71 | Bridget Murphy | 50 | Wife | — | Eire |
| 72 | John Murphy | 29 | Son | School Teacher | California |
| 73 | Mary Murphy THIS PERSON | 28 | Daughter | Stenographer | California |
| 74 | David Murphy | 27 | Son | Laborer | California |
| 75 | Thomas Murphy | 25 | Son | Laborer | California |
| 76 | Joseph J. Fitzpatrick | 63 | Head | Fireman | California |
| 77 | Mary A. Fitzpatrick | 55 | Wife | — | Northern Ireland |
| 78 | Joseph A. Fitzpatrick | 29 | Son | Clerk | California |
| 79 | Raymond T. Fitzpatrick | 9 | Son | — | California |
| 80 | Fred M. Blanck | 49 | Head | Shipping Clerk | California |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 6 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)