JC
James Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hillsborough-County, New Hampshire
Our Model Tree links this James Callahan across the 1930 and 1940 US Censuses in Hillsborough-County, New Hampshire (XGBoost, ~Confirmed) — first a son (b.~1914), then head of a 9-person household.
Age 26
b. ~1914
Male
Son
Born: New Hampshire
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hillsborough-County, New Hampshire |
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| 1935 Residence (City) | San Clan |
| 1935 Residence (County) | San Clan |
| Additional Details | |
| Occupation | Laborer |
| Industry | Shoe Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | San Clan |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Occupation | Laborer |
| Township / Ward | Nashua |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Robert Callahan | Son | — | 19 | ~1921 |
| George Bresnahan | Other | — | 47 | ~1893 |
| Patricia Callahan | Daughter | — | 12 | ~1928 |
| William Callahan | Son | — | 24 | ~1916 |
| Margaret Callahan | Daughter | — | 21 | ~1919 |
| Frank Callahan | Son | — | 29 | ~1911 |
| Bernice Callahan | Spouse | — | 51 | ~1889 |
| William Callahan | Head | — | 56 | ~1884 |
| James Callahan | Son | — | 26 | ~1914 |
Census Appearances
1930
Hillsborough, New …
Son, age 16
Hillsborough, New Hampshire · implied b. ~1914 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | James W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Massachusetts |
| Occupation | Shoe Worker |
| Industry | Shoe Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1940
Hillsborough-County, New …
Son, age 26
Hillsborough-County, New Hampshire · implied b. ~1914 — 9 household members
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| 1935 Residence (City) | San Clan |
| 1935 Residence (County) | San Clan |
| Occupation | Laborer |
| Industry | Shoe Factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | San Clan |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Callahan
Son · 1940 · age 26 · b. ~1914 · New Hampshire
★ You are viewing this record
Sibling
Robert Callahan
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Callahan
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Callahan
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Callahan
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Callahan
Sibling · 1940 · age 29
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 — Hillsborough-County, New Hampshire
Open full size
1940 US Federal Census — Hillsborough-County, New Hampshire
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02289-00138)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Rock | 22 | Head | No | New Hampshire |
| 42 | Eleanor Rock | 21 | Daughter | No | New Hampshire |
| 43 | Rhita Rock | 18 | Daughter | No | New Hampshire |
| 44 | Donald Bathelder | 38 | Head | Printer | New Hampshire |
| 45 | Alice Bathelder | 36 | Wife | No | New Hampshire |
| 46 | Harrie Allard | 47 | Head | Engineer | New Hamp |
| 47 | Allard | 44 | Wife | No | New Hamp |
| 48 | — | None | — | — | — |
| 49 | Alice Trow | 62 | Head | Supervisor | New Hampshire |
| 50 | Mary Trow | 60 | Sister | No | New Hampshire |
| 51 | Mabel Frazier | 57 | Head | No | New Hampshire |
| 52 | Harold Frazier | 74 | Wife | Laborer | Mass |
| 53 | Joseph Lampron | 60 | Head | Painter | New Hampshire |
| 54 | Marie Lampron | 57 | Wife | No | Canada French |
| 55 | Joseph Lampron | 28 | Son | Draftsman | New Hampshire |
| 56 | Edith Lampron | 30 | Daughter | Bookkeeper | New Hampshire |
| 57 | Robert Lampron | 26 | Son | Truck Driver | New Hampshire |
| 58 | David Lampron | 5 | Grandson | No | New Hampshire |
| 59 | James Annis | 31 | Head | Auto Mechanic | New Hampshire |
| 60 | Madeline Annis | 31 | Wife | No | New Hampshire |
| 61 | Edna Annis | 7 | Daughter | No | New Hampshire |
| 62 | Edward Annis | 2 | Son | No | New Hampshire |
| 63 | William Callahan | 56 | Head | Cutter | New Hampshire |
| 64 | Bernice Callahan | 51 | Wife | No | Mass |
| 65 | Frank Callahan | 29 | Son | Pressman | New Hampshire |
| 66 | James Callahan THIS PERSON | 26 | Son | Laborer | New Hampshire |
| 67 | William Callahan | 24 | Son | Laborer | New Hampshire |
| 68 | Margaret Callahan | 21 | Daughter | No | New Hampshire |
| 69 | Robert Callahan | 19 | Son | Laborer | New Hampshire |
| 70 | Patricia Callahan | 12 | Daughter | No | New Hampshire |
| 71 | George Bresnahan | 47 | Brother-in-law | Laborer | Mass |
| 72 | Violet Leith | 45 | Head | Forestry | Maine |
| 73 | Madeline Leith | 41 | Wife | No | Maine |
| 74 | Joan Leith | 13 | Daughter | No | Maine |
| 75 | Katherine Leith | 8 | Daughter | No | Maine |
| 76 | Elaine Leith | 6 | Daughter | No | Maine |
| 77 | Evelyn Leith | 4 | Daughter | No | Maine |
| 78 | Joseph Leith | 2 | Son | No | New Hampshire |
| 79 | Frank Arnold | 50 | Head | Locksmith | New Hampshire |
| 80 | Beatrice Arnold | 51 | Wife | No | Rhode Island |
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)