MW
Mary William — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bronx-County, New York
Our Model Tree links this Mary William across the 1930 and 1940 US Censuses in Bronx-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1896), then head of a 5-person household.
Age 44
b. ~1896
Female
Daughter
Born: Canada-English
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Bronx-County, New York |
| Surname | William |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Canada-English |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Bronx |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Automobile |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H 4 |
| 1935 Residence | New York |
| Birthplace (normalized) | canada-english |
| Occupation | Bookkeeper |
| Township / Ward | New York City |
| Est. Birth Year | ~1896 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary William | Daughter | — | 44 | ~1896 |
| Hugh William | Head | — | 75 | ~1865 |
| Susan William | Spouse | — | 74 | ~1866 |
| Joseph William | Son | — | 38 | ~1902 |
| John William | Son | — | 40 | ~1900 |
Census Appearances
1930
New York, …
Other, age 33
New York, New York · implied b. ~1897 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | William |
| Given Name | Margaret |
| Relationship to Head | Tenant |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Canada-English |
| Naturalization Status | Naturalized |
| Year of Immigration | 1916 |
| Age at First Marriage | 17 |
| Father's Birthplace | Canada-English |
| Mother's Birthplace | Canada-English |
| Occupation | Nurse |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birthplace (normalized) | canada-english |
1940
Bronx-County, New …
Daughter, age 44
Bronx-County, New York · implied b. ~1896 — 5 household members
| Surname | William |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Canada-English |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Bronx |
| Naturalization Status | Naturalized |
| Occupation | Bookkeeper |
| Industry | Automobile |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | H 4 |
| 1935 Residence | New York |
| Birthplace (normalized) | canada-english |
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 William across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary William
Daughter · 1940 · age 44 · b. ~1896 · New York
★ You are viewing this record
Sibling
Joseph William
Sibling · 1940 · age 38
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John William
Sibling · 1940 · age 40
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
1940 US Federal Census — Bronx-County, New York
Open full size
1940 US Federal Census — Bronx-County, New York
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-02487-00380)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Cullen | 36 | Head | Salesman | New York |
| 42 | Agnes Cullen | 33 | Wife | — | Vermont |
| 43 | Agnes Cullen | 8 | Daughter | — | New York |
| 44 | Elizabeth Cullen | 2 | Daughter | — | New York |
| 45 | Ann Fay | 43 | Sister-in-law | — | Vermont |
| 46 | Mary Fay | 41 | Sister-in-law | Clerk | Vermont |
| 47 | Raymond Colonel | 38 | Head | Fireman | New York |
| 48 | Mary Colonel | 39 | Wife | — | New York |
| 49 | Mary Colonel | 17 | Daughter | — | New York |
| 50 | Raymond Colonel | 15 | Son | — | New York |
| 51 | Joseph Colonel | 11 | Son | — | New York |
| 52 | Hugh William | 75 | Head | Retired | Canada-English |
| 53 | Susan William | 74 | Wife | 0 | England |
| 54 | Mary William THIS PERSON | 44 | Daughter | Bookkeeper | Canada-English |
| 55 | John William | 40 | Son | Clerk | Canada-English |
| 56 | Joseph William | 38 | Son | Clerk | Canada-English |
| 57 | Madeline Corrigan | 48 | Head | Bookkeeper | New York |
| 58 | George Baker | 46 | Brother | Electrician | New York |
| 59 | Loretta Baker | 45 | Sister | — | New York |
| 60 | Arthur Baker | 16 | Nephew | — | New York |
| 61 | Richard Baker | 9 | Nephew | — | New York |
| 62 | John Dewitt | 37 | Head | Secretary | New York |
| 63 | Mary Dewitt | 40 | Wife | — | New York |
| 64 | J. Gerard Dewitt | 7 | Son | — | New York |
| 65 | Marjorie Dewitt | 4 | Daughter | — | New York |
| 66 | Elizabeth Mccarthy | 76 | Mother-in-law | — | Irish Free State |
| 68 | Paul Thiele | 50 | Head | Chef | Germany |
| 69 | Anna Thiele | 52 | Wife | — | Germany |
| 70 | Frances Barth | 28 | Stepdaughter | Clerk | New Jersey |
| 71 | Paul Jr. Barth | 22 | Stepson | — | New Jersey |
| 72 | Frederick Beecham | 31 | Head | Plumber | New York |
| 73 | Constance Beecham | 31 | Wife | — | New York |
| 74 | Patricia Beecham | 6 | Daughter | — | New York |
| 75 | Daughter Beecham | 0 | Daughter | — | New York |
| 76 | Anna Mara | 63 | Mother-in-law | — | New York |
| 77 | Henry Junemann | 60 | Head | Broker | New York |
| 78 | Anna Junemann | 57 | Wife | — | New York |
| 80 | Walter Schmidt | 48 | Head | Agency | New Jersey |
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)