JC
James Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this James Callahan across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1863), then head of a 11-person household.
Age 77
b. ~1863
Male
Head
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 77 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
| Township / Ward | Boston |
| Est. Birth Year | ~1863 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Ellen Callahan | Spouse | — | 65 | ~1875 |
| Marguerite Lewis | Daughter | — | 28 | ~1912 |
| James Lewis | Other | — | 1 | ~1939 |
| Kathleen Callahan | Daughter | — | 25 | ~1915 |
| James Callahan | Son | — | 28 | ~1912 |
| Anna Callahan | Daughter | — | 46 | ~1894 |
| William Lewis | Other | — | 27 | ~1913 |
| James Callahan | Head | — | 77 | ~1863 |
| Helen Callahan | Daughter | — | 34 | ~1906 |
| Eleanor Lewis | Other | — | 4 | ~1936 |
| Laura Callahan | Daughter | — | 36 | ~1904 |
Census Appearances
1930
Suffolk, Massachusetts
Head, age 67
Suffolk, Massachusetts · implied b. ~1863 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1886 |
| Age at First Marriage | 25 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Dog Fancier |
| Industry | Home |
| Class of Worker | O |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 60.00 |
| Birthplace (normalized) | irish free state |
1940
Suffolk-County, Massachusetts
Head, age 77
Suffolk-County, Massachusetts · implied b. ~1863 — 11 household members
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 77 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
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
Head · 1940 · age 77 · b. ~1863 · 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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01675-00735)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Cassidy | None | — | — | — |
| 2 | Katharine Pettee | 39 | Head | — | Mass |
| 3 | Lucy Pettee | 75 | Mother | — | Mass |
| 4 | — | 54 | Head | Private Practice | Mass |
| 5 | — | None | — | — | — |
| 6 | Bernard Mcwilliams | 46 | Head | — | New Hampshire |
| 7 | Margaret Mcwilliams | 35 | Wife | — | Mass |
| 8 | Bernard Mcwilliams | 15 | Son | — | Mass |
| 9 | Paul Mcwilliams | 14 | Son | — | Mass |
| 10 | Lawrence Mcwilliams | 10 | Son | — | Mass |
| 11 | Lawrence Mcpherson | 41 | Brother-in-law | Chain Store | Mass |
| 12 | Eric Grant | 38 | Head | Salesman | England |
| 13 | Elizabeth Grant | 35 | Sister | — | England |
| 14 | James Callahan THIS PERSON | 77 | Head | — | Irish Free State |
| 15 | Ellen Callahan | 65 | Wife | — | Irish Free State |
| 16 | Anna Callahan | 46 | Daughter | Saleslady | Irish Free State |
| 17 | Laura Callahan | 36 | Daughter | Hospital | Pennsylvania |
| 18 | Helen Callahan | 34 | Daughter | Teletype | Pennsylvania |
| 19 | James J. Callahan | 28 | Son | Heating Ind. | Pennsylvania |
| 20 | Kathleen Callahan | 25 | Daughter | Registry | Mass |
| 21 | Marguerite Lewis | 28 | Daughter | — | Mass |
| 22 | William Lewis | 27 | Son-in-law | — | Mass |
| 23 | Eleanor Lewis | 4 | Granddaughter | — | Mass |
| 24 | James Lewis | 1 | Grandson | — | Mass |
| 25 | Patrick Ford | 65 | Head | Storekeeper | Irish Free State |
| 26 | Delia Ford | 63 | Wife | — | Irish Free State |
| 27 | William Quilty | 45 | Son-in-law | Advertising | Mass |
| 28 | Mary Quilty | 35 | Daughter | — | Mass |
| 29 | Louise Quilty | 1 | Granddaughter | — | Mass |
| 30 | Peter Tuchalian | 36 | Lodger | Shoe Repairer | Armenia |
| 31 | Ray Hodgdon | 44 | Head | — | Mass |
| 32 | Ray B. Hodgdon | 15 | Son | — | Mass |
| 33 | Elizabeth Higgins | 73 | Mother | — | Missouri |
| 34 | Gertrude Castle | 37 | Niece | — | Mass |
| 35 | John | 71 | Uncle | — | Mass |
| 36 | Russell Smith | 40 | Roomer | Mechanic | Canada Eng |
| 37 | Anthony Baldwin | 32 | Roomer | Insurance | Mass |
| 38 | Edward Robertson | 33 | Roomer | Post Office | Mass |
| 39 | Joseph Ross | 32 | Roomer | Office | Mass |
| 40 | Seeley Whittemore | 35 | Roomer | Garage | Connecticut |
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)