MI
Mary Irwin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-York-County, New York
Our Model Tree links this Mary Irwin across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 15-person household.
Age 70
b. ~1870
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Irwin |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Housekeeper |
| Industry | Lodging House |
| Class of Worker | OA |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Housekeeper |
| Township / Ward | New York City |
| Est. Birth Year | ~1870 |
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.
15 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Joseph Viaggio | Other | — | 45 | ~1895 |
| Thomas Welsh | Son | — | 16 | ~1924 |
| Charles Welsh | Other | — | 18 | ~1922 |
| Edward Winston | Other | — | 23 | ~1917 |
| Verna Noble | Other | — | 17 | ~1923 |
| Mary Welsh | Other | — | 25 | ~1915 |
| Margaret Gerdes | Other | — | 45 | ~1895 |
| Mary Irwin | Head | — | 70 | ~1870 |
| Mary Roche | Other | — | 56 | ~1884 |
| Henry Spover | Other | — | 34 | ~1906 |
| Julia Roche | Other | — | 16 | ~1924 |
| Godfrey Lindsay | Son | — | 14 | ~1926 |
| William Gerdes | Son | — | 10 | ~1930 |
| Margaret Gerdes | Daughter | — | 14 | ~1926 |
| Ethel Lindsay | Other | — | 45 | ~1895 |
Census Appearances
1920
Kings, New …
Spouse, age 51
Kings, New York · implied b. ~1869 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
New York, …
Head, age 62
New York, New York · implied b. ~1868 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1889 |
| Age at First Marriage | 26 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 24.00 |
| Radio Set | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
New-York-County, New …
Head, age 70
New-York-County, New York · implied b. ~1870 — 15 household members
| Surname | Irwin |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Naturalization Status | Naturalized |
| Occupation | Housekeeper |
| Industry | Lodging House |
| Class of Worker | OA |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| 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 Irwin across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Irwin
Head · 1940 · age 70 · b. ~1870 · 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 — New-York-County, New York
Open full size
1940 US Federal Census — New-York-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02658-00266)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charles Rix | 38 | Lodger | Painter | Germany |
| 42 | Karl Anderson | 43 | Lodger | Carpenter | Sweden |
| 43 | Ferdinand Farrell | 39 | Lodger | Cigar Maker | New York |
| 44 | Gabriel Lichtman | 40 | Lodger | Driver | New York |
| 45 | Nicholas Loebrich | 32 | Lodger | Salesman | New York |
| 46 | Henry Brunier | 78 | Lodger | — | New York |
| 47 | Max Gottsebauk | 51 | Lodger | Instrument | Germany |
| 48 | Joseph Veress | 28 | Lodger | Chauffeur | New York |
| 49 | George Matthews | 43 | Head | Doorman | England |
| 50 | Cathrien Matthews | 47 | Wife | — | Ireland |
| 51 | Joseph Matthews | 30 | Son | Bank Clerk | New York |
| 52 | Thomas Matthews | 23 | Son | New Worker | New York |
| 53 | Catharine Matthews | 18 | Daughter | New Worker | New York |
| 54 | Michael Hospodar | 36 | Lodger | Plumber | Austria |
| 55 | George Euopow | 43 | Lodger | Butler | Conn |
| 56 | Rudolf Benedikt | 45 | Lodger | Chauffeur | Austria |
| 57 | Peter Doolan | 45 | Lodger | Elevator | Conn |
| 58 | Polly A Marco | 19 | Lodger | Entertainer | Penn |
| 59 | Thomas Burgermeister | 45 | Lodger | Bookkeeper | Russia |
| 60 | Mary Irwin THIS PERSON | 70 | Head | Housekeeper | Ireland |
| 61 | Ethel Lindsay | 45 | Lodger | Secretary | New York |
| 62 | Godfrey Lindsay | 14 | Son | — | New York |
| 63 | Margaret Gerdes | 45 | Lodger | Steno Grapher | New York |
| 64 | Margaret Gerdes | 14 | Daughter | — | New York |
| 65 | William Gerdes | 10 | Son | — | New York |
| 66 | Verna Noble | 17 | Lodger | — | New York |
| 67 | Mary Welsh | 25 | Lodger | Waitress | New York |
| 68 | Charles Welsh | 18 | Brother | — | New York |
| 69 | Thomas Welsh | 16 | Son | — | New York |
| 70 | Mary A Roche | 56 | Lodger | Teacher | New York |
| 71 | Julia Roche | 16 | Niece | — | New York |
| 72 | Henry Spover | 34 | Lodger | Counter | Germany |
| 73 | Edward Winston | 23 | Lodger | Banking & Accounting | Georgia |
| 74 | Joseph Viaggio | 45 | Lodger | Bricklayer | Italy |
| 75 | Karl Hofherr | 35 | Head | Housekeeper | Germany |
| 76 | Mary Hofherr | 35 | Wife | — | Germany |
| 77 | John Schmidt | 70 | Lodger | — | Penn |
| 78 | Sebastian Schmeidh | 60 | Lodger | Handyman | Germany |
| 79 | Elsia Purpe | 53 | Lodger | Infant Nurse | Germany |
| 80 | Elsa Gardiner | 43 | Lodger | Housework | Sweden |
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)