JF
John Farrell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Worcester-County, Massachusetts
Our Model Tree links this John Farrell across the 1920, 1930 and 1940 US Censuses in Worcester-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Martha & Gertrude — first a son (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Male
Son
Born: Rhode Island
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Worcester-County, Massachusetts |
| Surname | Farrell |
| Given Name | John A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Additional Details | |
| Industry | Attendant |
| Class of Worker | Mental Inst. |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
| Township / Ward | Worcester City |
| Est. Birth Year | ~1914 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Farrell | Daughter | — | 23 | ~1917 |
| Martha Farrell | Head | — | 58 | ~1882 |
| John Farrell | Son | — | 26 | ~1914 |
| Charles Farrell | Son | — | 24 | ~1916 |
Census Appearances
1920
Worcester, Massachusetts
Son, age 5
Worcester, Massachusetts · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | John T |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | No |
| Speaks English | No |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1930
Worcester, Massachusetts
Son, age 16
Worcester, Massachusetts · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farrell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | errand boy |
| Industry | wire mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
1940
Worcester-County, Massachusetts
Son, age 26
Worcester-County, Massachusetts · implied b. ~1914 — 4 household members
| Surname | Farrell |
| Given Name | John A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Rhode Island |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Industry | Attendant |
| Class of Worker | Mental Inst. |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Rhode Island |
| Birth Country | United States |
| Birthplace (normalized) | rhode island |
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 Martha Farrell (~0.92 confidence) and mother Gertrude Farrell (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Martha Farrell
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Gertrude Farrell
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Farrell
Son · 1940 · age 26 · b. ~1914 · Massachusetts
★ You are viewing this record
Sibling
Charles Farrell
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Farrell
Sibling · 1940 · age 23
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 — Worcester-County, Massachusetts
Open full size
1940 US Federal Census — Worcester-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01716-00336)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frederick H Bevan | 31 | Head | Weaver | Mass |
| 2 | Madeline E Bevan | 31 | Wife | — | Mass |
| 3 | William A Bevan | 73 | Father-in-law | Weaver | England |
| 4 | William R Bevan | 26 | Brother-in-law | Machinist | Mass |
| 5 | William Holdsworth | 64 | Head | Mill Wright | Penn |
| 6 | Ellen D Holdsworth | 54 | Wife | — | Mass |
| 7 | Helen M Holdsworth | 28 | Daughter | Clerk | Mass |
| 8 | John Evans | 44 | Head | Janitor | Penn |
| 9 | Viola Evans | 40 | Wife | — | Mass |
| 10 | Thomas J Evans | 17 | Son | — | Mass |
| 11 | Donald Evans | 14 | Son | — | Mass |
| 12 | Joseph Jakus | 69 | Head | — | Lithuania |
| 13 | Pauline Jakus | 55 | Wife | — | Lithuania |
| 14 | Joseph Jakus | 30 | Son | Transportation | Mass |
| 15 | Theodora Jakus | 28 | Daughter | Hairdresser | Mass |
| 16 | Antoinette Metter | 25 | Daughter | Housekeeper | Mass |
| 17 | John Metter | 5 | Son-in-law | — | Mass |
| 18 | Irene Lakus | 23 | Daughter | — | Mass |
| 19 | Margaret E Madigan | 47 | Head | — | Mass |
| 20 | Mary M Madigan | 12 | Daughter | — | Mass |
| 21 | Anne M Madigan | 9 | Daughter | — | Mass |
| 22 | George M King | 59 | Head | Finish Tender | Mass |
| 23 | Annie J King | 54 | Wife | — | Mass |
| 24 | Peter J Callan | 82 | Head | Janitor | Ireland |
| 25 | Ellen T Callan | 55 | Daughter | — | Mass |
| 26 | Anna A Callan | 42 | Daughter | Bookkeeper | Mass |
| 27 | Michael J Mccarthy | 49 | Head | Fireman | Mass |
| 28 | Mary A Mccarthy | 48 | Wife | — | Mass |
| 29 | Marie A Mccarthy | 16 | Daughter | — | Mass |
| 30 | Ruth E Mccarthy | 14 | Daughter | — | Mass |
| 31 | Michael G Callan | 53 | Head | Fireman | Mass |
| 32 | Elizabeth V Callan | 51 | Wife | — | Mass |
| 33 | William N Callan | 26 | Son | — | Mass |
| 34 | Phillip P Callan | 25 | Son | Operator | Mass |
| 35 | Robert P Callan | 21 | Son | Counter Man | Mass |
| 36 | Faretta M Nevin | 13 | Sister-in-law | Nurse | Mass |
| 37 | Martha A Farrell | 58 | Head | — | Mass |
| 38 | John A Farrell THIS PERSON | 26 | Son | — | Rhode Island |
| 39 | Charles H Farrell | 24 | Son | Miller | Rhode Island |
| 40 | Mary W Farrell | 23 | Daughter | — | Mass |
Pedigree Summary
John + 2 siblings
Gen 1 · 2 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)