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Margaret Mcgrath — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Margaret Mcgrath across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Margaret & Michael — first a daughter (b.~1913), then head of a 3-person household.
Age 27
b. ~1913
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Credit Bureau |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 236 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Stenographer |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1913 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Rita Maher | Other | — | 25 | ~1915 |
| Margaret Mcgrath | Head | — | 62 | ~1878 |
| Margaret Mcgrath | Daughter | — | 27 | ~1913 |
Census Appearances
1920
San Francisco, …
Daughter, age 7
San Francisco, California · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| 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 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Daughter, age 27
San-Francisco-County, California · implied b. ~1913 — 3 household members
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Stenographer |
| Industry | Credit Bureau |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 236 |
| Highest Grade | H 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 Margaret Mcgrath across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Margaret Mcgrath (~0.92 confidence) and father Michael Mcgrath (~0.92 confidence) and mother Margaret Mcgrath (~0.92 confidence) and mother Margaret Mcgrath (~0.92 confidence) and father Patrick Mcgrath (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Margaret Mcgrath
b. ~1873
Source mother
● Household
· direct · ~0.92
Father
Michael Mcgrath
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Margaret Mcgrath
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Margaret Mcgrath
b. ~1878
Source mother
● Household
· direct · ~0.92
Father
Patrick Mcgrath
b. ~1878
Source father
● Household
· direct · ~0.92
This person
Anchor record
Margaret Mcgrath
Daughter · 1940 · age 27 · b. ~1913 · California
★ 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 — 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-t0627-00313-00666)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Thigher | 7 | Son | — | California |
| 42 | Dorothy Thigher | 6 | Daughter | — | California |
| 43 | Ray A. Sutherland | 41 | Head | Laborer | North Dakota |
| 44 | Dorothy E. Sutherland | 30 | Wife | — | Canada English |
| 45 | Leroy Sutherland | 5 | Son | — | California |
| 46 | Richard Sutherland | 3 | Son | — | Illinois |
| 47 | William Conyers | 20 | Head | Clerk | Kentucky |
| 48 | Irene Conyers | 28 | Wife | — | Kentucky |
| 49 | James A. Ingles | 5 | Step son | — | Washington |
| 50 | Clarence Huseman | 27 | Head | Brewer | Missouri |
| 51 | Oliver Huseman | 22 | Wife | — | California |
| 52 | Mary E. Fuddey | 42 | Head | Seamstress | Missouri |
| 53 | Richard Parker | 68 | Head | — | Maryland |
| 54 | Albina Latham | 60 | Head | — | Minnesota |
| 55 | John O. Knoph | 58 | Head | Seaman | Norway |
| 56 | Margit Knoph | 51 | Wife | — | Norway |
| 57 | Mabel Knoph | 32 | Daughter | Baker | Washington |
| 58 | Cornelius Jorgensen | 39 | Boarder | Seaman | Norway |
| 59 | Richard Bender | 24 | Head | Longshoreman | California |
| 60 | Violet Bender | 25 | Wife | — | California |
| 61 | Ovid Seyler | 26 | Head | Laborer | California |
| 62 | Rose Seyler | 25 | Wife | — | California |
| 63 | David Seyler | 4 | Son | — | California |
| 64 | Jimmy Seyler | 2 | Son | — | California |
| 65 | George Seyler | 1 | Son | — | California |
| 66 | Max Rosenfeld | 62 | Head | Laborer | Poland |
| 67 | Ella B. Rosenfeld | 54 | Wife | — | California |
| 68 | Robert P. Quirk | 27 | Head | Bartender | Massachusetts |
| 69 | Agnes Quirk | 26 | Wife | — | Massachusetts |
| 70 | Jacqueline Quirk | 6 | Daughter | — | Massachusetts |
| 71 | Roberta Quirk | 1 | Daughter | — | Massachusetts |
| 72 | Edward Sweeney | 54 | Head | Signal Operator | Michigan |
| 73 | Anna P. Sweeney | 50 | Wife | — | Colorado |
| 74 | C. R. White | 37 | Head | Operator | Massachusetts |
| 75 | Kathleen White | 34 | Wife | — | California |
| 76 | Thomas White | 4 | Son | — | California |
| 77 | June White | 1 | Daughter | — | California |
| 78 | Margaret Mcgrath | 62 | Head | — | Ireland |
| 79 | Margaret Mcgrath THIS PERSON | 27 | Daughter | Stenographer | California |
| 80 | Rita Maher | 25 | Lodger | — | California |
Related Census Records
Pedigree Summary
Margaret
Gen 1 · 5 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)