MG
Mary Griffin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this Mary Griffin across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a head (b.~1865), then head of a 5-person household.
Age 75
b. ~1865
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Griffin |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | New York, Brooklyn |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | New York Brooklyn |
| Est. Birth Year | ~1865 |
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 |
|---|---|---|---|---|
| Eleanor Phelan | Daughter | — | 23 | ~1917 |
| Grace Griffin | Daughter | — | 40 | ~1900 |
| Mary Griffin | Head | — | 75 | ~1865 |
| Edward Phelan | Other | — | 28 | ~1912 |
| Frank Griffin | Son | — | 30 | ~1910 |
Census Appearances
1920
Kings, New …
Head, age 59
Kings, New York · implied b. ~1861 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Kings, New …
Other, age 69
Kings, New York · implied b. ~1861 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Mary |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 69 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1882 |
| Age at First Marriage | 21 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 85 |
| Radio Set | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Kings-County, New …
Head, age 75
Kings-County, New York · implied b. ~1865 — 5 household members
| Surname | Griffin |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | New York, Brooklyn |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Highest Grade | 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 Griffin 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 Griffin
Head · 1940 · age 75 · b. ~1865 · 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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02553-00312)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bertha Meinke | 53 | Wife | — | Germany |
| 42 | John Meinke | 20 | Son | Runner | New York |
| 43 | Daniel Chicolo | 24 | Head | Driver | New York |
| 44 | Margaret Chicolo | 29 | Wife | — | Canada Eng. |
| 45 | Margaret Chicolo | 4 | Daughter | — | New York |
| 46 | Danielle Chicolo | 1 | Daughter | — | New York |
| 47 | Earl Williams | 42 | Head | Taxi Driver | New York |
| 48 | Margaret Williams | 41 | Wife | — | New York |
| 49 | James Ballas | 51 | Head | Restaurant Mgr. | Greece |
| 50 | Eleftheria Ballas | 41 | Wife | — | Greece |
| 51 | Helen Ballas | 8 | Daughter | — | New York |
| 52 | Steve Rikas | 55 | Lodger | Florist | Greece |
| 53 | Harry Margranakis | 50 | Head | Restaurant Mgr. | Greece |
| 54 | Kathleen Margranakis | 40 | Wife | Fur Finisher | Greece |
| 55 | Andrew Margranakis | 18 | Son | — | New York |
| 56 | James Margranakis | 15 | Son | — | New York |
| 57 | John Madden | 43 | Head | Office Mgr | New York |
| 58 | Pearl Madden | 41 | Wife | — | New York |
| 59 | Michael Madden | 72 | Head | Mailer | Ireland |
| 60 | Ann Madden | 72 | Wife | — | New York |
| 61 | Florence Baker | 33 | Daughter | — | New York |
| 62 | Alexander Baker | 13 | Grandson | — | New York |
| 63 | Joan Baker | 9 | Granddaughter | — | New York |
| 64 | Robert Weiss | 42 | Head | Agent | New York |
| 65 | Mary Weiss | 40 | Wife | — | New York |
| 66 | Seymour Weiss | 19 | Son | Counterman | New York |
| 67 | Herbert Weiss | 11 | Son | — | New York |
| 68 | Lena Salmonowitz | 75 | Mother-in-law | — | Russia |
| 69 | Eugene Collins | 34 | Head | Detective | New York |
| 70 | Helen Collins | 31 | Wife | — | New York |
| 71 | Dorothy Collins | 9 | Daughter | — | New York |
| 72 | Helen Collins | 7 | Daughter | — | New York |
| 73 | James Collins | 4 | Son | — | New York |
| 74 | Mary Mccauley | 58 | Mother | — | New York |
| 75 | Charles Mccauley | 32 | Son | Printer | New York |
| 76 | Mary Griffin THIS PERSON | 75 | Head | — | Ireland |
| 77 | Grace Griffin | 40 | Daughter | Telephone Op | New York |
| 78 | Frank Griffin | 30 | Son | Printer | New York |
| 79 | Edward Phelan | 28 | Son-in-law | Clerk | New York |
| 80 | Eleanor Phelan | 23 | Daughter | Clerk | 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)