JC
James Callahan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Norfolk-County, Massachusetts
Our Model Tree links this James Callahan across the 1910, 1920, 1930 and 1940 US Censuses in Norfolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Mary & Cornelius — first a head (b.~1908), then head of a 3-person household.
Age 32
b. ~1908
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Norfolk-County, Massachusetts |
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Canton |
| 1935 Residence (County) | Norfolk |
| Additional Details | |
| Occupation | Dye boy or feeder |
| Industry | Dyeing Leather |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 468 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Dye Boy Or Feeder |
| Township / Ward | Canton |
| Est. Birth Year | ~1908 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Joan Callahan | Daughter | — | 2 | ~1938 |
| Alice Callahan | Spouse | — | 31 | ~1909 |
| James Callahan | Head | — | 32 | ~1908 |
Census Appearances
1910
Norfolk, Massachusetts
Son, age 2
Norfolk, Massachusetts · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Norfolk, Massachusetts
Son, age 12
Norfolk, Massachusetts · implied b. ~1908 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Norfolk, Massachusetts
Son, age 22
Norfolk, Massachusetts · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Caretaker |
| Industry | Private Estate |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Norfolk-County, Massachusetts
Head, age 32
Norfolk-County, Massachusetts · implied b. ~1908 — 3 household members
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Canton |
| 1935 Residence (County) | Norfolk |
| Occupation | Dye boy or feeder |
| Industry | Dyeing Leather |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 468 |
| Highest Grade | Hs 1 |
| 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 James Callahan across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Callahan (~0.92 confidence) and father Cornelius Callahan (~0.92 confidence) and mother Mary Callahan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Callahan
b. ~1876
Source mother
● Household
· direct · ~0.92
Father
Cornelius Callahan
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Mary Callahan
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Callahan
Head · 1940 · age 32 · b. ~1908 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Norfolk-County, Massachusetts
Open full size
1940 US Federal Census — Norfolk-County, Massachusetts
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01626-00548)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Barbaglia Drolent Barbaglia | 45 | Wife | — | Italy |
| 42 | Guerino Barbaglia | 23 | Son | Laborer | Massachusetts |
| 43 | Leono Barbaglia | 21 | Son | Laborer | Massachusetts |
| 44 | Lena Barbaglia | 20 | Daughter | Clerk In Office | Massachusetts |
| 45 | Robert Barbaglia | 17 | Son | Laborer | Massachusetts |
| 46 | Diana Barbaglia | 15 | Daughter | — | Massachusetts |
| 48 | James Callahan THIS PERSON | 32 | Head | Dye Boy Or Feeder | Massachusetts |
| 49 | Alice Callahan | 31 | Wife | Telephone Operator | Massachusetts |
| 50 | Joan Callahan | 2 | Daughter | — | Massachusetts |
| 51 | Thomas S. White | 49 | Head | Manager Retail Store | Massachusetts |
| 52 | Katherine White | 47 | Wife | — | Massachusetts |
| 53 | Thomas White | 16 | Son | — | Massachusetts |
| 54 | John White | 14 | Son | — | Massachusetts |
| 55 | Elizabeth White | 8 | Daughter | — | Massachusetts |
| 56 | Irene I. Kelleher | 61 | Sister-in-law | Clerk | Massachusetts |
| 57 | Thomas Mcguiggan | 66 | Head | Dyeing Machine | Massachusetts |
| 58 | Margaret Mcguiggan | 66 | Wife | — | Massachusetts |
| 59 | Mary L. Mcguiggan | 31 | Daughter | School Teacher | Massachusetts |
| 60 | Thomas Mcguiggan | 25 | Son | Salesman Retail | Massachusetts |
| 61 | John Dineen | 75 | Brother-in-law | — | Massachusetts |
| 62 | John Langwith | 50 | Head | Carpenter | Canada-English |
| 63 | Gertrude Langwith | 48 | Wife | Winder | Canada-English |
| 64 | Philip J. Danshy | 67 | Head | Foreman | Massachusetts |
| 65 | Julia Danshy | 68 | Wife | — | Massachusetts |
| 66 | Helen M. Danshy | 35 | Daughter | Secretary | Massachusetts |
| 67 | Philip J. Jr. Danshy | 31 | Son | Welder | Massachusetts |
| 68 | Mary D. Danshy | 28 | Daughter | School Teacher | Massachusetts |
| 70 | Dominic Carrara | 53 | Head | Steam Fitter | Italy |
| 71 | Carmella Carrara | 54 | Wife | — | Italy |
| 72 | Edith Carrara | 28 | Daughter | Stitcher | Massachusetts |
| 73 | Ernest Carrara | 15 | Son | — | Massachusetts |
| 74 | Dorothy Carrara | 14 | Daughter | — | Massachusetts |
| 75 | Richard Carrara | 8 | Son | — | Massachusetts |
| 76 | Byron T. Crawford | 38 | Head | Cook | Canada-English |
| 77 | Hilda Crawford | 46 | Wife | Laborer | Massachusetts |
| 78 | William J. Powers | 27 | Step Son | Dyeing | Massachusetts |
| 79 | Edna M. Powers | 26 | Step Daughter-in-law | Stitcher | Massachusetts |
| 80 | Rita R. Powers | 22 | Step Daughter | Service Radio | Massachusetts |
Pedigree Summary
James
Gen 1 · 3 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)