MC
Mary Cahill — 1930 US Census Record
Linked across censuses1930 United States Federal Census · New York, New York
Our Model Tree links this Mary Cahill across the 1920, 1930 and 1940 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 2-person household.
Age 62
b. ~1868
Female
Head
Born: Ireland
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | New York, New York |
| Surname | Cahill |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1882 |
| Age at First Marriage | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 25.00 |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Manhattan |
| Est. Birth Year | ~1868 |
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.
2 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Cahill | Daughter | — | 24 | ~1906 |
| Mary Cahill | Head | — | 62 | ~1868 |
Census Appearances
1920
New York, …
Head, age 52
New York, New York · implied b. ~1868 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cahill |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1885 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Dressmaker |
| Industry | Department Store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1891 |
| Birthplace (normalized) | ireland |
1930
New York, …
Head, age 62
New York, New York · implied b. ~1868 — 2 household members
| Surname | Cahill |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1882 |
| Age at First Marriage | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 25.00 |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Queens-County, New …
Other, age 73
Queens-County, New York · implied b. ~1867 — 40 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cahill |
| Given Name | Margaret M |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Single |
| Birthplace | Ireland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Queens |
| Naturalization Status | Naturalized |
| Occupation | Asst Superior |
| Industry | Convent |
| Class of Worker | NP |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Mary Cahill across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Cahill
Head · 1930 · age 62 · b. ~1868 · New York
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — New York, New York
Open full size
1930 US Federal Census — New York, New York
Page Contents
50 people indexed on this census page (ia:1930:newyorkcensus00reel1566:0471)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Cahill THIS PERSON | 62 | Head | — | Ireland |
| 2 | Margaret Cahill | 24 | Daughter | Clerk | New York |
| 3 | Alice Reid | 62 | Head | — | New York |
| 4 | James Draper | 40 | Head | — | New York |
| 5 | Helen Draper | 31 | Wife | — | New York |
| 6 | James Jr. Draper | 3 | Son | — | New York |
| 7 | Robert Draper | 1 | Son | — | New York |
| 8 | Helen Draper | 0 | Daughter | — | New York |
| 9 | Elizabeth Draper | 42 | Sister | — | New York |
| 10 | Elizabeth Draper | 72 | Mother | — | England |
| 11 | Christie | 56 | Head | Chauffeur | Scotland |
| 12 | Catherine Christie | 55 | Wife | — | Scotland |
| 13 | Alexander Law | 25 | Head | Gardener | Scotland |
| 14 | Sarah Law | 24 | Wife | — | Scotland |
| 15 | Alexander Law | 0 | Son | — | New York |
| 16 | Mary Law | 21 | Sister | — | Scotland |
| 17 | Mary Law | 61 | Mother | — | Scotland |
| 18 | Sanford Logue | 38 | Head | Butler | Georgia |
| 19 | Lottie Logue | 38 | Wife | — | Georgia |
| 20 | Sidney Hudson | 35 | Brother | Butler | England |
| 21 | Alice Hudson | 34 | Sister | — | England |
| 22 | Beryl Hudson | 5 | Daughter | — | England |
| 23 | Samuel Towers | 55 | Head | Real Estate | New York |
| 24 | Katherine Towers | 22 | Wife | — | New York |
| 25 | Robert Towers | 1 | Son | — | New York |
| 26 | Helen Gorman | 25 | Maid | Maid | Ireland |
| 27 | Anna Gorman | 55 | Nurse | Nurse | Germany |
| 28 | Emil Adler | 62 | Head | Manufacturer | Bohemia |
| 29 | Minnie Adler | 56 | Wife | — | Bohemia |
| 30 | Thomas H. Wade | 56 | Head | — | Georgia |
| 31 | Sarah B. Wade | 39 | Wife | — | Ireland |
| 32 | Archie Campbell | 61 | Head | — | North Carolina |
| 33 | Florence Campbell | 52 | Wife | — | South Carolina |
| 34 | Caroline Eckhardt | 57 | Lodger | — | Wisconsin |
| 35 | Beryl Beecher | 38 | Head | — | Canada |
| 36 | Charlotte Bernhard | 51 | Head | Manager | South America |
| 37 | Janet Bernhard | 20 | Daughter | — | Ohio |
| 38 | Impi Kuivakainen | 27 | Maid | Maid | Finland |
| 39 | Hiram P. De B. De | 34 | Head | Broker | Illinois |
| 40 | Mildred P. De B. De | 33 | Wife | — | Canada |
| 41 | Patricia P. De B. De | 6 | Daughter | — | New York |
| 42 | Theresa Forchman | 35 | Maid | Governess | Germany |
| 43 | Stephen Miller | 45 | Head | Broker | Illinois |
| 44 | Marie Miller | 40 | Wife | — | Pennsylvania |
| 45 | John Vance | 64 | Head | — | New Jersey |
| 46 | Estelle L. Vance | 63 | Wife | — | New Jersey |
| 47 | Mary Welsh | 35 | Maid | Maid | Czechoslovakia |
| 48 | James Greenhalgh | 56 | Head | Salesman | England |
| 49 | Sadie Greenhalgh | 54 | Wife | — | New York |
| 50 | James Jr. Greenhalgh | 22 | Son | — | New York |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)