TM
Thomas Mcgrath — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Thomas Mcgrath across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 3-person household.
Age 51
b. ~1889
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | McGrath |
| Given Name | Thomas A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Fireman |
| Industry | City of L.A. |
| Class of Worker | GW |
| Hours Worked | 42 |
| Income (1939) | 600 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Fireman |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1889 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Leslie Mcgrath | Son | — | 18 | ~1922 |
| Nellie Mcgrath | Spouse | — | 45 | ~1895 |
| Thomas Mcgrath | Head | — | 51 | ~1889 |
Census Appearances
1920
Los Angeles, …
Head, age 32
Los Angeles, California · implied b. ~1888 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Thomas A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | New York |
| Occupation | Fireman |
| Industry | City Department |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Los Angeles, …
Head, age 42
Los Angeles, California · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Thomas A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 29 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | New York |
| Occupation | Captain |
| Industry | Fire Dept. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5500 |
| Radio Set | R |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Los-Angeles-County, California
Head, age 51
Los-Angeles-County, California · implied b. ~1889 — 3 household members
| Surname | McGrath |
| Given Name | Thomas A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Occupation | Fireman |
| Industry | City of L.A. |
| Class of Worker | GW |
| Hours Worked | 42 |
| Income (1939) | 600 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Thomas Mcgrath across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Thomas Mcgrath
Head · 1940 · age 51 · b. ~1889 · California
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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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00418-00047)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Sweeney | 34 | Head | Ball Player | Ohio |
| 42 | Helen Sweeney | 30 | Wife | — | Ohio |
| 43 | Carroll J. Mansfield | 45 | Head | Electrical Engineer | Connecticut |
| 44 | Helen F. Mansfield | 35 | Wife | — | Colorado |
| 45 | Roland Mansfield | 8 | Son | — | California |
| 46 | Marilyn Mansfield | 6 | Daughter | — | California |
| 47 | Frank R. Philbrook | 58 | Head | District Sales Manager | Wisconsin |
| 48 | Irene C. Philbrook | 52 | Wife | — | Ohio |
| 49 | Morris W. Levering | 50 | Head | Milkman | California |
| 50 | E. Gladys Levering | 49 | Wife | Teacher | Illinois |
| 51 | Gerald S. Nagel | 27 | Head | Proprietor | Texas |
| 52 | Eleanor M. Nagel | 21 | Wife | — | Texas |
| 53 | Fred E. Nagel | 63 | Father | Proprietor | Texas |
| 54 | Laura W. Nagel | 58 | Mother | — | Texas |
| 55 | Pablo P. Prietto | 36 | Head | Doctor | Peru |
| 56 | Consuelo Prietto | 31 | Wife | — | Mexico |
| 57 | Pablo P. Prietto | 6 | Son | — | California |
| 58 | Consuelo Prietto | 5 | Daughter | — | California |
| 59 | Maria J. Prietto | 3 | Daughter | — | California |
| 60 | Effie Martinez | 19 | Maid | Housekeeper | California |
| 62 | Reginald D. Fudge | 41 | Head | Proprietor | England |
| 63 | Nellie Fudge | 39 | Wife | — | England |
| 64 | Reginald D. Fudge | 11 | Son | — | California |
| 65 | Danilo J. Chiappini | 42 | Head | Manager | Italy |
| 66 | Louise C. Chiappini | 41 | Wife | — | California |
| 67 | Robert Chiappini | 21 | Son | Salesman Clerk | California |
| 68 | Jack Goldberg | 47 | Head | Owner Operator | Illinois |
| 69 | Rae Goldberg | 44 | Wife | — | Missouri |
| 70 | Milton M. Goldberg | 22 | Son | Journalism | California |
| 71 | Sylvia E. Goldberg | 18 | Daughter | Dancer | California |
| 72 | Regina R. Sabbah | 20 | Guest | Receptionist | California |
| 73 | Lenore White | 48 | Head | Teacher | Washington |
| 74 | Marion Tromiter | 60 | Head | — | California |
| 75 | Dorrit Tompkins | 35 | Daughter | Nurse | California |
| 76 | Thomas A. Mcgrath THIS PERSON | 51 | Head | Fireman | Illinois |
| 77 | Nellie Mcgrath | 45 | Wife | — | California |
| 78 | Leslie A. Mcgrath | 18 | Son | — | California |
| 79 | Tony D. Gallina | 47 | Head | Solicitor | Pennsylvania |
| 80 | Robinette Gallina | 45 | Wife | Teacher | Kansas |
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)