JF
John Farley — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Farley across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 5-person household.
Age 10
b. ~1930
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Farley |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Lowell |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | S 6 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | City Of Lowell |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| James Farley | Head | — | 48 | ~1892 |
| William Farley | Son | — | 16 | ~1924 |
| James Farley | Son | — | 17 | ~1923 |
| John Farley | Son | — | 10 | ~1930 |
| Beatrice Farley | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 1
Middlesex, Massachusetts · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Farley |
| 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 |
1940
Middlesex-County, Massachusetts
Son, age 10
Middlesex-County, Massachusetts · implied b. ~1930 — 5 household members
| Surname | Farley |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Lowell |
| 1935 Residence (County) | Middlesex |
| Class of Worker | 0 |
| Highest Grade | S 6 |
| 1935 Residence | Same House |
| 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 Farley across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Farley
Son · 1940 · age 10 · b. ~1930 · Massachusetts
★ You are viewing this record
Sibling
James Farley
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Farley
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01691-00009)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Paul R. Clark | 10 | Son | — | Massachusetts |
| 2 | Francis E. Clark | 3 | Son | — | Massachusetts |
| 3 | Sarah Sullivan | 60 | Head | — | Massachusetts |
| 4 | Mary Q. Sullivan | 26 | Daughter | Teacher | Massachusetts |
| 5 | James Farley | 48 | Head | Railroad Fireman | Massachusetts |
| 6 | Beatrice Farley | 45 | Wife | — | Massachusetts |
| 7 | James Farley | 17 | Son | — | Massachusetts |
| 8 | William Farley | 16 | Son | — | Massachusetts |
| 9 | John Farley THIS PERSON | 10 | Son | — | Massachusetts |
| 10 | Leonard F. Sherman | None | Head | — | — |
| 11 | Evelyn Sherman | 43 | Wife | — | New York |
| 12 | William H. Robertson | 35 | Head | Salesman | Massachusetts |
| 13 | Gladys Robertson | 35 | Wife | — | Massachusetts |
| 14 | William H. Jr. Robertson | 8 | Son | — | Massachusetts |
| 15 | Kathleen Mccarthy | 21 | Maid | Maid | Massachusetts |
| 17 | Euretta Marin | 51 | Head | — | Massachusetts |
| 18 | Kirke H. Dunlap | 55 | Head | Plumber | California |
| 19 | Hanna V. Dunlap | 53 | Wife | — | Massachusetts |
| 20 | Nathaniel W. Trull | 35 | Head | Clerk | Massachusetts |
| 21 | Ethel F. Trull | 30 | Wife | — | Massachusetts |
| 22 | Nathaniel W. Jr. Trull | 5 | Son | — | Massachusetts |
| 23 | Frederick J. S. Bennett | 55 | Head | Manager | Maine |
| 24 | Agnes Rob. Bennett | 50 | Wife | — | Massachusetts |
| 25 | Barbara L. Bennett | 13 | Daughter | — | Massachusetts |
| 26 | Frederick J. Jr. Bennett | 7 | Son | — | Massachusetts |
| 27 | Frederick W. Coburn | 69 | Head | Asst. Editor | New Hampshire |
| 28 | Grace A. Coburn | 70 | Wife | — | New Hampshire |
| 29 | Selena V. Coburn | 43 | Daughter | — | New York |
| 31 | Joseph M. Duffy | 42 | Head | Instructor | Massachusetts |
| 32 | Ellen Duffy | 37 | Wife | — | Massachusetts |
| 33 | Eleanor Duffy | 8 | Daughter | — | Massachusetts |
| 34 | Mary Ruth Duffy | 7 | Daughter | — | Massachusetts |
| 35 | Joanne Duffy | 2 | Daughter | — | Massachusetts |
| 36 | Martha Duffy | 0 | Daughter | — | Massachusetts |
| 37 | Harold E. Mayo | 40 | Head | Sales Manager | Maine |
| 38 | Lucie M. Mayo | 36 | Wife | — | Maine |
| 39 | Harold Jr. Mayo | 9 | Son | — | New York |
| 40 | Jean L. Mayo | 8 | Daughter | — | New York |
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)