MG
Mary Grady — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-York-County, New York
Our Model Tree links this Mary Grady across the 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 7-person household.
Age 23
b. ~1917
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Grady |
| Given Name | Mary H |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | N.Y. City |
| 1935 Residence (County) | New York |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Railway Co |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1200 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Stenographer |
| Township / Ward | Ny City |
| Est. Birth Year | ~1917 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Grady | Son | — | 25 | ~1915 |
| Mary Grady | Daughter | — | 23 | ~1917 |
| Margaret Grady | Daughter | — | 15 | ~1925 |
| John Grady | Son | — | 21 | ~1919 |
| John Grady | Head | — | 54 | ~1886 |
| Helen Grady | Daughter | — | 22 | ~1918 |
| Nora Grady | Spouse | — | 55 | ~1885 |
Census Appearances
1930
New York, …
Daughter, age 12
New York, New York · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grady |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
New-York-County, New …
Daughter, age 23
New-York-County, New York · implied b. ~1917 — 7 household members
| Surname | Grady |
| Given Name | Mary H |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | N.Y. City |
| 1935 Residence (County) | New York |
| Occupation | Stenographer |
| Industry | Railway Co |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1200 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Grady across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Grady
Daughter · 1940 · age 23 · b. ~1917 · New York
★ You are viewing this record
Sibling
Margaret Grady
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Grady
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Grady
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Grady
Sibling · 1940 · age 21
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 — 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-t0627-02651-00408)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Zeal Barrett | 45 | Head | Salesman | New York |
| 42 | Mary Barrett | 43 | Wife | Salesgirl | New York |
| 43 | Madeline Barrett | 14 | Daughter | — | New York |
| 44 | John J Grady | 54 | Head | Officer | Eire |
| 45 | Nora Grady | 55 | Wife | — | Eire |
| 46 | James Grady | 25 | Son | Clerk | New York |
| 47 | Mary H Grady THIS PERSON | 23 | Daughter | Stenographer | New York |
| 48 | Helen A Grady | 22 | Daughter | Stenographer | New York |
| 49 | John Grady | 21 | Son | — | New York |
| 50 | Margaret C Grady | 15 | Daughter | — | New York |
| 51 | Thomas J Egan | 40 | Head | Accountant | Eire |
| 52 | Kathleen Egan | 41 | Wife | — | Eire |
| 53 | Kathleen Egan | 12 | Daughter | — | New York |
| 54 | Jordan Egan | 9 | Son | — | New York |
| 55 | Diane M Egan | 4 | Daughter | — | New York |
| 56 | John Mansfield | 74 | Uncle | — | Eire |
| 57 | Henry Brecker | 51 | Head | Delivery Clerk | New York |
| 58 | Emma Brecker | 49 | Wife | — | New York |
| 59 | Catherine Brecker | 67 | Mother | — | Germany |
| 60 | George Brecker | 50 | Brother | Delivery Clerk | New York |
| 61 | Edward Lapsley | 51 | Head | Steamfitter | North Ireland |
| 62 | Sarah Lapsley | 50 | Wife | — | North Ireland |
| 63 | Mary Elizabeth Lapsley | 23 | Daughter | Dancer | Pennsylvania |
| 64 | Edith Lapsley | 18 | Daughter | Salesgirl | New York |
| 65 | Marguerite Lapsley | 14 | Daughter | Usherette | New York |
| 66 | Catherine Lapsley | 13 | Daughter | — | New York |
| 67 | Thomas Edw Lapsley | 25 | Son | Helper | New York |
| 68 | Thomas F Coyle | 52 | Head | Chauffeur | New York |
| 69 | Olga Coyle | 46 | Wife | — | New York |
| 70 | Thomas B Coyle | 20 | Son | Delivery | New York |
| 71 | Thomas J Byron | 49 | Head | Houseman | New York |
| 72 | Susan Byron | 49 | Wife | — | New York |
| 73 | Joseph Byron | 22 | Son | Clerk | New York |
| 74 | Frederick Byron | 19 | Son | Press Feeder | New York |
| 75 | George Byron | 13 | Son | — | New York |
| 76 | Ray Bladley | 66 | Head | Manager | New York |
| 77 | Bertha Bladley | 59 | Wife | — | New York |
| 78 | Harry Bladley | 67 | Brother | Salesman | New York |
| 79 | John J Shea | 60 | Head | Foreman | Eire |
| 80 | Hannah Shea | 60 | Wife | — | Eire |
Related Census Records
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)