JF
James Farrell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this James Farrell across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 9-person household.
Age 10
b. ~1930
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Farrell |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Highest Grade | S-4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1930 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Mary Farrell | Daughter | — | 5 | ~1935 |
| Alice Farrell | Daughter | — | 17 | ~1923 |
| Regis Farrell | Daughter | — | 17 | ~1923 |
| Eleanor Farrell | Daughter | — | 11 | ~1929 |
| Patricia Farrell | Daughter | — | 16 | ~1924 |
| Margaret Farrell | Daughter | — | 1 | ~1939 |
| Richard Farrell | Head | — | 43 | ~1897 |
| James Farrell | Son | — | 10 | ~1930 |
| Mary Farrell | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Los Angeles, …
Other, age 1
Los Angeles, California · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | James |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Italy |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 10
Los-Angeles-County, California · implied b. ~1930 — 9 household members
| Surname | Farrell |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Highest Grade | S-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 James Farrell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Farrell
Son · 1940 · age 10 · b. ~1930 · California
★ You are viewing this record
Sibling
Mary Farrell
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Farrell
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Regis Farrell
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Farrell
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Farrell
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Farrell
Sibling · 1940 · age 16
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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00376-00236)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward Cregan | 35 | Head | Promoter Manager | Pennsylvania |
| 2 | Wilhelmina Cregan | 35 | Wife | — | New York |
| 3 | Carol Youngman | 5 | Daughter | — | New Jersey |
| 4 | John Whitaker | 68 | Head | Contractor | Virginia |
| 5 | Zella C. Whitaker | 67 | Wife | — | Ohio |
| 6 | William Burkhart | 71 | Head | — | Ohio |
| 7 | Harry Burkhart | 66 | Brother | — | Ohio |
| 8 | John S. Kemp | 42 | Head | Builder | California |
| 9 | Florence Kemp | 42 | Wife | — | California |
| 10 | Jack Kemp | 20 | Son | — | California |
| 11 | Minnie Volzman | 74 | Mother-in-law | — | Germany |
| 12 | Wilfred Calland | 53 | Head | Actor | England |
| 13 | Maude E. Calland | 46 | Wife | Teacher | Minnesota |
| 14 | Robert Brock | 27 | Head | Secretary | Illinois |
| 15 | Irene Brock | 24 | Wife | — | Illinois |
| 16 | Ralland Brown | 39 | Head | Salesman | California |
| 17 | Mable Brown | 35 | Wife | — | Missouri |
| 18 | Janice M. Brown | 14 | Daughter | — | California |
| 19 | Ralland Brown | 10 | Son | — | California |
| 20 | Richard Brown | 5 | Son | — | California |
| 21 | Henry C. Berard | 51 | Head | Broker | Illinois |
| 22 | Inez Berard | 49 | Wife | — | California |
| 23 | Charles Watson | 31 | Head | Salesman | Oklahoma |
| 24 | Dorothy Watson | 23 | Wife | — | Ohio |
| 25 | Charles Jr. Watson | 3 | Son | — | California |
| 26 | Richard Farrell | 43 | Head | Clerk | Pennsylvania |
| 27 | Mary D. Farrell | 42 | Wife | — | Pennsylvania |
| 28 | Regis H. Farrell | 17 | Daughter | — | Pennsylvania |
| 29 | Alice Farrell | 17 | Daughter | — | Pennsylvania |
| 30 | Patricia Farrell | 16 | Daughter | — | California |
| 31 | Eleanor Farrell | 11 | Daughter | — | California |
| 32 | James Farrell THIS PERSON | 10 | Son | — | California |
| 33 | Mary Jane Farrell | 5 | Daughter | — | California |
| 34 | Margaret Farrell | 1 | Daughter | — | California |
| 35 | Samuel Jarvis | 26 | Head | Inspector | New York |
| 36 | Betty Jarvis | 26 | Wife | — | New York |
| 37 | Permelia Jarvis | 2 | Daughter | — | California |
| 38 | Samuel Iii Jarvis | 0 | Son | — | California |
| 39 | Mary H. Fleck | 46 | Head | — | Ohio |
| 40 | Mary Ellen Fleck | 14 | Daughter | — | Ohio |
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)