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John Callahan — 1920 US Census Record
Model Tree available1920 United States Federal Census · Grafton, New Hampshire
Our Model Tree links this John Callahan across the 1900, 1910 and 1920 US Censuses in Grafton, New Hampshire (XGBoost, ~Confirmed), with identified parents James & Eva — first a son (b.~1899), then head of a 10-person household.
Age 21
b. ~1899
Male
Son
Born: New Hampshire
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Grafton, New Hampshire |
| Surname | Callahan |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Vermont |
| Additional Details | |
| Occupation | Clerk |
| Industry | Freight Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Occupation | Clerk |
| Township / Ward | Town Of Danbury |
| Est. Birth Year | ~1899 |
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.
10 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Cathleen Callahan | Daughter | — | 9 | ~1911 |
| Charlotte Callahan | Daughter | — | 22 | ~1898 |
| Madeline Callahan | Daughter | — | 18 | ~1902 |
| Maude Callahan | Daughter | — | 27 | ~1893 |
| Alice Callahan | Daughter | — | 25 | ~1895 |
| Mildred Callahan | Daughter | — | 16 | ~1904 |
| Clara Callahan | Daughter | — | 19 | ~1901 |
| James Callahan | Head | — | 56 | ~1864 |
| John Callahan | Son | — | 21 | ~1899 |
| Mary Callahan | Spouse | — | 49 | ~1871 |
Census Appearances
1900
Grafton, New …
Son, age 2
Grafton, New Hampshire · implied b. ~1898 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Birth Month | Nov |
| Birth Year | 1898 |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Vermont |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1910
Grafton, New …
Son, age 11
Grafton, New Hampshire · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Vermont |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1920
Grafton, New …
Son, age 21
Grafton, New Hampshire · implied b. ~1899 — 10 household members
| Surname | Callahan |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Vermont |
| Occupation | Clerk |
| Industry | Freight Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 John Callahan across 3 US Census years (1900, 1910 and 1920) in Grafton, New Hampshire, using XGBoost record linkage. Identified parents: father James Callahan (~0.92 confidence) and mother Eva Callahan (~0.92 confidence) and mother Ima Callahan (~0.92 confidence) and mother Mary Callahan (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Callahan
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Eva Callahan
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Ima Callahan
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Mary Callahan
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Callahan
Son · 1920 · age 21 · b. ~1899 · New Hampshire
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Sibling
Maude Callahan
Sibling · 1920 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clara Callahan
Sibling · 1920 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Callahan
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cathleen Callahan
Sibling · 1920 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Callahan
Sibling · 1920 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Madeline Callahan
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Callahan
Sibling · 1920 · age 25
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 — Grafton, New Hampshire
Open full size
1920 US Federal Census — Grafton, New Hampshire
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1008unit:0298)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Quimby | 51 | Head | — | New York |
| 2 | Martha Quimby | 47 | Wife | — | New Hampshire |
| 3 | Alice Murphy | 59 | Boarder | Farmer | New York |
| 4 | Margaret Murphy | 55 | Wife | — | Ireland |
| 5 | Mary Ritcher | 14 | Daughter | — | Connecticut |
| 6 | Winfield Baldic | 28 | Head | Farmer | New Hampshire |
| 7 | Lottie Baldic | 27 | Wife | — | Canada |
| 8 | Emma Baldic | 4 | Daughter | — | New Hampshire |
| 9 | Catherine Baldic | 2 | Daughter | — | New Hampshire |
| 10 | James H. Callahan | 56 | Head | Farmer | New Hampshire |
| 11 | Mary A. Callahan | 49 | Wife | — | Vermont |
| 12 | John J. Callahan THIS PERSON | 21 | Son | Clerk | New Hampshire |
| 13 | Madeline Callahan | 18 | Daughter | Teacher | New Hampshire |
| 14 | Mildred Callahan | 16 | Daughter | — | New Hampshire |
| 15 | Cathleen Callahan | 9 | Daughter | — | New Hampshire |
| 16 | Maude Callahan | 27 | Daughter | Teacher | New Hampshire |
| 17 | Alice Callahan | 25 | Daughter | Clerk | New Hampshire |
| 18 | Charlotte Callahan | 22 | Daughter | — | Vermont |
| 19 | Clara Callahan | 19 | Daughter | — | Vermont |
| 20 | Andrew J. Norton | 70 | Head | Farmer | New Hampshire |
| 21 | Mary E. Norton | 44 | Wife | — | New Hampshire |
| 22 | Charles E. Slover | 50 | Head | Carpenter | New Hampshire |
| 23 | Wilfred L. Slover | 16 | Son | Worker | New Hampshire |
| 24 | Mabel A. Slover | 13 | Daughter | — | New Hampshire |
| 25 | Dennis C. Miller | 27 | Son-in-law | Teamster | New Hampshire |
| 26 | Mildred S. Miller | 10 | Daughter | — | New Hampshire |
| 27 | Willard S. Miller | 8 | Son | — | New Hampshire |
| 28 | Wallace S. Miller | 6 | Son | — | New Hampshire |
| 29 | Daniel J. Gardner | 30 | Head | Caretaker | New Hampshire |
| 30 | Elizabeth E. Gardner | 40 | Wife | — | Canada |
| 31 | Catherine E. Gardner | 6 | Daughter | — | New Hampshire |
| 32 | Eugene B. Fisher | 67 | Head | Farmer | New Hampshire |
| 33 | Sarah J. Fisher | 60 | Wife | — | Massachusetts |
| 34 | Irving Mink | 52 | Boarder | Labour | Maine |
| 35 | William S. Wiseman | 79 | Head | Artist | Pennsylvania |
| 36 | Burt M. Wiseman | 50 | Son | Mason | New Hampshire |
| 37 | Martin L. Everett | 50 | Head | Labourer | Vermont |
| 38 | Mabel Everett | 36 | Wife | — | U.S. |
| 39 | George Everett | 7 | Son | — | New Hampshire |
| 40 | George Peabody | 49 | Head | Splitter | New Hampshire |
| 41 | Lilla Peabody | 45 | Wife | Laundry | New Hampshire |
| 42 | Willard G. Peabody | 20 | Son | Turner | New Hampshire |
| 43 | Mildred G. Peabody | 22 | Daughter | Cook | New Hampshire |
| 44 | Dorothy B. Peabody | 17 | Daughter | — | New Hampshire |
| 45 | Walter B. Patena | 38 | Head | Farmer | Canada |
| 46 | Hattie Patena | 40 | Wife | — | New Hampshire |
| 47 | Nathaniel B. Tugwell | 74 | Boarder | Farmer | New Hampshire |
| 48 | George B. Herbert | 53 | Head | Farmer | New Hampshire |
| 49 | Alice B. Herbert | 47 | Wife | — | New Hampshire |
| 50 | Clayton G. Herbert | 20 | Son | Labour | Massachusetts |
Pedigree Summary
John + 7 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)