JC
James Callahan — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this James Callahan across the 1910 and 1920 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1900), then head of a 9-person household.
Age 20
b. ~1900
Male
Son
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Middlesex, Massachusetts |
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Rubber Shop |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1900 |
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 1920 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Lillian Callahan | Daughter | — | 18 | ~1902 |
| Ellen Callahan | Daughter | — | 28 | ~1892 |
| Mary Callahan | Daughter | — | 23 | ~1897 |
| Catherine Callahan | Spouse | — | 53 | ~1867 |
| Francis Callahan | Son | — | 12 | ~1908 |
| Thomas Callahan | Head | — | 56 | ~1864 |
| Margaret Callahan | Daughter | — | 16 | ~1904 |
| Thomas Callahan | Son | — | 25 | ~1895 |
| James Callahan | Son | — | 20 | ~1900 |
Census Appearances
1910
Middlesex, Massachusetts
Son, age 11
Middlesex, Massachusetts · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Son, age 20
Middlesex, Massachusetts · implied b. ~1900 — 9 household members
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Rubber Shop |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| 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 2 US Census years (1910 and 1920) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
James Callahan
Son · 1920 · age 20 · b. ~1900 · Massachusetts
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Sibling
Mary Callahan
Sibling · 1920 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Callahan
Sibling · 1920 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Callahan
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Callahan
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Callahan
Sibling · 1920 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Callahan
Sibling · 1920 · 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
1920 US Federal Census — Middlesex, Massachusetts
Open full size
1920 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu707unit:0116)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ernest W Oldfield | 51 | Head | Janitor | Canada |
| 2 | Sarah Oldfield | 49 | Wife | — | Massachusetts |
| 3 | Robert A Oldfield | 14 | Son | — | Massachusetts |
| 4 | John J Kelley | 48 | Brother-in-law | Teamster | Massachusetts |
| 5 | Frank Kelley | 38 | Brother-in-law | Teamster | Massachusetts |
| 6 | Joseph Keough | 52 | Head | Teamster | Massachusetts |
| 7 | Sadie Keough | 47 | Wife | — | Massachusetts |
| 8 | Barney Steinberg | 29 | Head | Peddler | Roumania |
| 9 | Sadie Steinberg | 24 | Wife | — | Roumania |
| 10 | Dora Steinberg | 5 | Daughter | — | Canada |
| 11 | Henry Mclaughlin | 31 | Head | Teamster | Massachusetts |
| 12 | Bertha Mclaughlin | 26 | Wife | — | Massachusetts |
| 13 | Olive Mclaughlin | 7 | Daughter | — | Massachusetts |
| 14 | Henry Mclaughlin | 5 | Son | — | Massachusetts |
| 15 | Lawrence Mclaughlin | 3 | Son | — | Massachusetts |
| 16 | Ruth Mclaughlin | 1 | Daughter | — | Massachusetts |
| 17 | William Mclaughlin | 31 | Brother-in-law | Teamster | Massachusetts |
| 18 | John J Gomes | 32 | Head | Laborer | Portugal |
| 19 | Isabella M Gomes | 32 | Wife | — | Portugal |
| 20 | Mary J Gomes | 14 | Daughter | — | Massachusetts |
| 21 | Thomas Callahan | 56 | Head | Laborer | Ireland |
| 22 | Catherine Callahan | 53 | Wife | — | Ireland |
| 23 | Ellen Callahan | 28 | Daughter | Stitcher | Massachusetts |
| 24 | Thomas Callahan | 25 | Son | Teamster | Massachusetts |
| 25 | Mary Callahan | 23 | Daughter | Stitcher | Massachusetts |
| 26 | James Callahan THIS PERSON | 20 | Son | Laborer | Massachusetts |
| 27 | Lillian Callahan | 18 | Daughter | Stitcher | Massachusetts |
| 28 | Margaret Callahan | 16 | Daughter | Stitcher | Massachusetts |
| 29 | Francis Callahan | 12 | Son | — | Massachusetts |
| 30 | Ellen J Herrick | 45 | Head | — | Massachusetts |
| 31 | Mary A Herrick | 21 | Daughter | Stitcher | Massachusetts |
| 32 | William J Herrick | 20 | Son | Laborer | Massachusetts |
| 33 | John J Herrick | 18 | Son | Laborer | Massachusetts |
| 34 | Francis Mcshane | 57 | Head | Laborer | Ireland |
| 35 | Mary Mcshane | 44 | Wife | — | Massachusetts |
| 36 | Isaac Dymowski | 30 | Head | Laborer | Poland |
| 37 | Dominica Dymowski | 25 | Wife | — | Poland |
| 38 | Isaac Szampolinski | 35 | Brother-in-law | Laborer | Poland |
| 39 | Barbara Szampolinski | 26 | Sister | — | Poland |
| 40 | Marian Szampolinski | 4 | Nephew | — | Massachusetts |
| 41 | Stephen Szampolinski | 3 | Nephew | — | Massachusetts |
| 42 | Frank Pinto | 23 | Head | Laborer | Portugal |
| 43 | Alma Pinto | 16 | Wife | — | Portugal |
| 44 | Antonio Silva | 25 | Head | Laborer | Portugal |
| 45 | Mary Silva | 19 | Wife | — | Portugal |
| 46 | Belmira Silva | 1 | Daughter | — | Massachusetts |
| 47 | Manuel Gomes | 53 | Head | Laborer | Portugal |
| 48 | Mary Gomes | 52 | Wife | — | Portugal |
| 49 | John Gomes | 19 | Son | Laborer | Massachusetts |
| 50 | Manuel Gomes | 16 | Son | Laborer | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)