JF
John Flaherty — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Flaherty across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 4-person household.
Age 67
b. ~1873
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Flaherty |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Woburn |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Currier |
| Industry | Leather shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | G 8 |
| 1935 Residence | Same House |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Currier |
| Township / Ward | Woburn |
| Est. Birth Year | ~1873 |
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 |
|---|---|---|---|---|
| John Flaherty | Son | — | 39 | ~1901 |
| Edward Flaherty | Son | — | 38 | ~1902 |
| Bridget Flaherty | Spouse | — | 67 | ~1873 |
| John Flaherty | Head | — | 67 | ~1873 |
Census Appearances
1920
Middlesex, Massachusetts
Other, age 50
Middlesex, Massachusetts · implied b. ~1870 — 24 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flaherty |
| Given Name | John |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1891 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Cutter |
| Industry | Underwear factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1896 |
| Birthplace (normalized) | ireland |
1930
Middlesex, Massachusetts
Other, age 58
Middlesex, Massachusetts · implied b. ~1872 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flaherty |
| Given Name | John |
| Relationship to Head | Inmate |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1887 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Middlesex-County, Massachusetts
Head, age 67
Middlesex-County, Massachusetts · implied b. ~1873 — 4 household members
| Surname | Flaherty |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Woburn |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Occupation | Currier |
| Industry | Leather shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | G 8 |
| 1935 Residence | Same House |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Flaherty across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Flaherty
Head · 1940 · age 67 · b. ~1873 · Massachusetts
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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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01622-00457)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Beatty | 11 | Daughter | — | Massachusetts |
| 2 | Brenda Beatty | 8 | Daughter | — | Massachusetts |
| 3 | Bernadette Beatty | 4 | Daughter | — | Massachusetts |
| 4 | Margaret Devaney | 39 | Boarder | Cutter | Massachusetts |
| 5 | Margaret Beatty | 72 | Head | — | Ireland |
| 6 | John Flaherty THIS PERSON | 67 | Head | Currier | Ireland |
| 7 | Bridget Flaherty | 67 | Wife | — | Ireland |
| 8 | John Flaherty | 39 | Son | Shipper | Massachusetts |
| 9 | Edward Flaherty | 38 | Son | Plumber | Massachusetts |
| 10 | Bernard Quinn | 76 | Head | — | Ireland |
| 11 | Annie Quinn | 67 | Wife | — | Ireland |
| 12 | Ethel Quinn | 33 | Daughter | School Teacher | Massachusetts |
| 13 | Florence Quinn | 32 | Daughter | Housework | Massachusetts |
| 14 | Anna Quinn | 30 | Daughter | Secretary | Massachusetts |
| 15 | Veronica Quinn | 24 | Daughter | Teacher | Massachusetts |
| 16 | Martin H. Fallon | 47 | Head | Fruit Dealer | Massachusetts |
| 17 | Helen Fallon | 47 | Wife | — | Massachusetts |
| 18 | John Fallon | 17 | Son | — | Massachusetts |
| 19 | William Fallon | 15 | Son | — | Massachusetts |
| 20 | Elizabeth Fallon | 9 | Daughter | — | Massachusetts |
| 21 | Ernest Forsberg | 68 | Head | — | Sweden |
| 22 | Hulda Forsberg | 67 | Wife | — | Sweden |
| 23 | George Bard | 53 | Head | Sorter | Massachusetts |
| 24 | Flora Bard | 53 | Wife | — | Maine |
| 25 | Grace Bard | 18 | Daughter | — | Massachusetts |
| 26 | Esther Wilbur | 16 | Niece | — | Maine |
| 27 | William Casey | 47 | Head | Solvent Salesman | Massachusetts |
| 28 | Ellen Casey | 46 | Wife | — | Massachusetts |
| 29 | Clara Casey | 18 | Daughter | — | Massachusetts |
| 30 | Betty Casey | 11 | Daughter | — | Massachusetts |
| 31 | Annie Casey | 69 | Mother | — | Ireland |
| 32 | Oscar Hakason | 79 | Head | — | Sweden |
| 33 | Elizabeth Hakason | 80 | Wife | — | Sweden |
| 34 | Ernest Christenson | 36 | Son-in-law | Auto Mechanic | Massachusetts |
| 35 | Elsie Christenson | 37 | Daughter | — | Massachusetts |
| 36 | Elsie M. Christenson | 9 | Granddaughter | — | Massachusetts |
| 37 | Leo F. Fenton | 47 | Head | Clerk | Massachusetts |
| 38 | Helen Fenton | 35 | Wife | — | Massachusetts |
| 39 | Shirley Fenton | 16 | Daughter | — | Massachusetts |
| 40 | Jean Fenton | 14 | Daughter | — | Massachusetts |
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)