JF
John Farrell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Farrell across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Agnes & James — first a son (b.~1918), then head of a 12-person household.
Age 22
b. ~1918
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Farrell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Elevator Operator |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Elevator Operator |
| Township / Ward | Boston City |
| 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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Farrell | Daughter | — | 20 | ~1920 |
| Mary Farrell | Daughter | — | 18 | ~1922 |
| Rita Farrell | Daughter | — | 7 | ~1933 |
| Elizabeth Farrell | Daughter | — | 25 | ~1915 |
| Dorothy Farrell | Daughter | — | 4 | ~1936 |
| John Farrell | Head | — | 45 | ~1895 |
| Edward Farrell | Son | — | 8 | ~1932 |
| William Farrell | Son | — | 16 | ~1924 |
| Arthur Farrell | Son | — | 15 | ~1925 |
| Charles Farrell | Son | — | 11 | ~1929 |
| John Farrell | Son | — | 22 | ~1918 |
| Margaret Farrell | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 1
Suffolk, Massachusetts · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 11
Suffolk, Massachusetts · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Home Owned/Rented | 20 |
| Veteran | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 22
Suffolk-County, Massachusetts · implied b. ~1918 — 12 household members
| Surname | Farrell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Elevator Operator |
| Industry | Hotel |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 John Farrell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Agnes Farrell (~0.92 confidence) and father James Farrell (~0.92 confidence) and father John Farrell (~0.92 confidence) and father Charles Farrell (~0.92 confidence) and mother Margaret Farrell (~0.92 confidence) and mother Mary Farrell (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Agnes Farrell
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
James Farrell
b. ~1881
Source father
● Household
· direct · ~0.92
Father
John Farrell
b. ~1895
Source father
● Household
· direct · ~0.92
Father
Charles Farrell
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Margaret Farrell
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Mary Farrell
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Farrell
Son · 1940 · age 22 · b. ~1918 · Massachusetts
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Sibling
Edward Farrell
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Farrell
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Farrell
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Farrell
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Farrell
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Farrell
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Farrell
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Farrell
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Farrell
Sibling · 1940 · age 20
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01664-00488)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Dalziel | 35 | Head | Heat-Treater | Scotland |
| 2 | Elizabeth Dalziel | 34 | Wife | — | Scotland |
| 3 | Elizabeth Dalziel | 15 | Daughter | — | Scotland |
| 4 | Janet Dalziel | 10 | Daughter | — | Massachusetts |
| 5 | John Dalziel | 4 | Son | — | Massachusetts |
| 6 | James F. Wasson | 62 | Head | Road Foreman | Maine |
| 7 | Ellen T. Wasson | 54 | Wife | — | Massachusetts |
| 8 | Eugene Crowley | 54 | Brother-in-law | — | Massachusetts |
| 9 | Caroline M. Crowley | 49 | Sister-in-law | Switch Board Operator | Massachusetts |
| 10 | John J. Farrell | 45 | Head | Painter | Massachusetts |
| 11 | Margaret Farrell | 44 | Wife | — | Massachusetts |
| 12 | Elizabeth Farrell | 25 | Daughter | Waitress | Massachusetts |
| 13 | John Farrell THIS PERSON | 22 | Son | Elevator Operator | Massachusetts |
| 14 | Margaret Farrell | 20 | Daughter | New Worker | Massachusetts |
| 15 | Mary Farrell | 18 | Daughter | Care Of Children | Massachusetts |
| 16 | William Farrell | 16 | Son | New Worker | Massachusetts |
| 17 | Arthur Farrell | 15 | Son | — | Massachusetts |
| 18 | Charles Farrell | 11 | Son | — | Massachusetts |
| 19 | Edward Farrell | 8 | Son | — | Massachusetts |
| 20 | Rita Farrell | 7 | Daughter | — | Massachusetts |
| 21 | Dorothy Farrell | 4 | Daughter | — | Massachusetts |
| 22 | Gilbert H. Mcwilliams | 75 | Head | — | Prince Edward Island |
| 23 | Charlotte Mcwilliams | 42 | Daughter | Stenographer | Massachusetts |
| 24 | Martha I. Mcwilliams | 33 | Daughter | Stenographer | Massachusetts |
| 25 | Leon Marquis | 37 | Head | Laborer | Maine |
| 26 | Leona Marquis | 35 | Wife | — | Maine |
| 27 | Richard Marquis | 9 | Son | — | Maine |
| 28 | Joan Marquis | 7 | Daughter | — | Maine |
| 29 | Janet Marquis | 5 | Daughter | — | Maine |
| 30 | John Marquis | 3 | Son | — | Maine |
| 31 | Angus Maclachlan | 35 | Head | Buyer | Michigan |
| 32 | Ann Maclachlan | 25 | Wife | — | Massachusetts |
| 33 | Jacqueline Maclachlan | 3 | Daughter | — | Massachusetts |
| 34 | Donald Maclachlan | 2 | Son | — | Massachusetts |
| 35 | Margaret G. Link | 56 | Head | Machinist | Massachusetts |
| 36 | Mary Link | 32 | Daughter | Sorter | Massachusetts |
| 37 | Margaret A. Coffey | 86 | Head | — | Massachusetts |
| 38 | Letrak Ohtoomian | 45 | Head | Laborer | Turkey |
| 39 | Lousentak Ohtoomian | 35 | Wife | — | Turkey |
| 40 | Pedros Ohtoomian | 17 | Son | Order Boy | Massachusetts |
Related Census Records
Pedigree Summary
John + 9 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)