MC
Margaret Callahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Richmond-County, New York
Our Model Tree links this Margaret Callahan across the 1930 and 1940 US Censuses in Richmond-County, New York (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 8-person household.
Age 68
b. ~1872
Female
Head
Born: Irish Free State
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Richmond-County, New York |
| Surname | Callahan |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Richmond |
| 1935 Residence (County) | Richmond |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birthplace (normalized) | irish free state |
| Township / Ward | Richmond |
| Est. Birth Year | ~1872 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Callahan | Daughter | — | 30 | ~1910 |
| William Callahan | Son | — | 39 | ~1901 |
| Margaret Callahan | Daughter | — | 45 | ~1895 |
| John Callahan | Son | — | 41 | ~1899 |
| Anne Callahan | Daughter | — | 34 | ~1906 |
| Mary Callahan | Daughter | — | 42 | ~1898 |
| Gertrude Callahan | Daughter | — | 38 | ~1902 |
| Margaret Callahan | Head | — | 68 | ~1872 |
Census Appearances
1930
New York, …
Other, age 57
New York, New York · implied b. ~1873 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Callahan |
| Given Name | Mary |
| Relationship to Head | Head-H |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1893 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Counter lady |
| Industry | Restaurant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 45 |
| Radio Set | R |
| Birthplace (normalized) | irish free state |
1940
Richmond-County, New …
Head, age 68
Richmond-County, New York · implied b. ~1872 — 8 household members
| Surname | Callahan |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Richmond |
| 1935 Residence (County) | Richmond |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Margaret Callahan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Callahan
Head · 1940 · age 68 · b. ~1872 · New York
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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 — Richmond-County, New York
Open full size
1940 US Federal Census — Richmond-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02760-00150)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Wood | 64 | Head | Minister | England |
| 2 | Bertha Wood | 58 | Wife | — | England |
| 3 | Victoria-Ab Wood | 20 | Daughter | — | New York |
| 4 | William Adams | 37 | Son-in-law | Salesman | Penn. |
| 5 | Mayflower Adams | 29 | Daughter | — | New York |
| 6 | Margaret Adams | 0 | Granddaughter | — | New York |
| 7 | Frank Strauss | 47 | Head | Chemist | Penn. |
| 8 | Felicie Strauss | 47 | Wife | — | Belgium |
| 9 | George Strauss | 16 | Son | — | New York |
| 10 | William Strauss | 11 | Son | — | New York |
| 11 | Miriam Strauss | 7 | Daughter | — | New York |
| 12 | Mildred Piacentino | 30 | Maid | Maid | Italy |
| 13 | Virginia Mehling | 63 | Head | — | New York |
| 14 | Marie Mehling | 36 | Daughter | Stenographer | New York |
| 15 | Blanche Mehling | 28 | Daughter | Stenographer | New York |
| 16 | Mary Akrod | 53 | Head | — | Poland |
| 17 | Walter Akrod | 25 | Son | Office Assistant | New Jersey |
| 18 | Marian A Akrod | 23 | Daughter | Typist | New York |
| 19 | Jean T Akrod | 19 | Daughter | Operator | New York |
| 20 | Edward J Akrod | 30 | Son | Statistician | New Jersey |
| 21 | Eleanor R Akrod | 26 | Daughter-in-law | Typist | New York |
| 22 | Margaret Callahan THIS PERSON | 68 | Head | — | Irish Free State |
| 23 | Margaret E Callahan | 45 | Daughter | Clerk | New York |
| 24 | Mary V Callahan | 42 | Daughter | — | New York |
| 25 | John J Callahan | 41 | Son | Inspector | New York |
| 26 | William P Callahan | 39 | Son | Trainman | New York |
| 27 | Gertrude M Callahan | 38 | Daughter | Typist | New York |
| 28 | Anne R Callahan | 34 | Daughter | Typist | New York |
| 29 | Elizabeth L Callahan | 30 | Daughter | File Clerk | New York |
| 30 | William H Martin | 60 | Head | Calendar Clerk | New York |
| 31 | Marvin A Blaston | 27 | Son-in-law | Interne | Tennessee |
| 32 | Katherine G Blaston | 23 | Daughter | — | New York |
| 33 | Louise Deininger | 40 | Housekeeper | Housekeeper | Germany |
| 34 | Alexander Colgan | 41 | Head | Manager | Penn. |
| 35 | Yvonne Colgan | 36 | Wife | — | Utah |
| 36 | Alexander Jr. Colgan | 8 | Son | — | New York |
| 37 | Richard Colgan | 6 | Son | — | New York |
| 38 | Joseph Colgan | 2 | Son | — | New York |
| 39 | Thos. F O'Donnell | 41 | Head | Manager | Ireland |
| 40 | Mary O'Donnell | 34 | Wife | — | New York |
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)