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Mary Blake — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this Mary Blake across the 1920, 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1880), then head of a 8-person household.
Age 60
b. ~1880
Female
Spouse
Born: Vermont
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, New Jersey |
| Surname | Blake |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Vermont |
| 1935 Residence (City) | Elizabeth |
| 1935 Residence (County) | Union |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
| Township / Ward | Elizabeth |
| Est. Birth Year | ~1880 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Blake | Head | — | 70 | ~1870 |
| James Blake | Son | — | 29 | ~1911 |
| James Lovett | Other | — | 50 | ~1890 |
| George Blake | Son | — | 28 | ~1912 |
| Catherine Green | Other | — | 45 | ~1895 |
| Mary Blake | Spouse | — | 60 | ~1880 |
| James Shanley | Other | — | 50 | ~1890 |
| Alice Blake | Daughter | — | 23 | ~1917 |
Census Appearances
1920
Union, New …
Spouse, age 41
Union, New Jersey · implied b. ~1879 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blake |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Vermont |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Vermont |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
1930
Union, New …
Spouse, age 50
Union, New Jersey · implied b. ~1880 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blake |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Vermont |
| Age at First Marriage | 26 |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Vermont |
| Can Read/Write | Yes |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
1940
Union-County, New …
Spouse, age 60
Union-County, New Jersey · implied b. ~1880 — 8 household members
| Surname | Blake |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Vermont |
| 1935 Residence (City) | Elizabeth |
| 1935 Residence (County) | Union |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Vermont |
| Birth Country | United States |
| Birthplace (normalized) | vermont |
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 Blake 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 Blake
Spouse · 1940 · age 60 · b. ~1880 · New Jersey
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Union-County, New Jersey
Open full size
1940 US Federal Census — Union-County, New Jersey
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02397-00781)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth Masterson | 65 | Head | — | New Jersey |
| 2 | James Masterson | 32 | Son | Electrician | New Jersey |
| 3 | Alex Liska | 23 | Lodger | Molder | New Jersey |
| 4 | Joseph Liska | 27 | Lodger | Molder | New Jersey |
| 5 | Ann Flood | 12 | Lodger | — | New Jersey |
| 6 | Thomas Murphy | 35 | Head | Helper Exp Oil | Canada |
| 7 | Marguerite Murphy | 35 | Wife | — | New Jersey |
| 8 | Virginia Joy Murphy | 12 | Daughter | — | New Jersey |
| 9 | Gerald Murphy | 11 | Son | — | New Jersey |
| 10 | William Kenny | 39 | Head | City Fireman | New Jersey |
| 11 | Virginia Kenny | 34 | Wife | — | New Jersey |
| 12 | William Kenny | 12 | Son | — | New Jersey |
| 13 | Eleanor Kenny | 10 | Daughter | — | New Jersey |
| 14 | George Perks | 23 | Lodger | Welder | New Jersey |
| 15 | Paul Gibson | 24 | Lodger | Machine Operator | No. Carolina |
| 16 | James Blake | 70 | Head | Inspector | New York |
| 17 | Mary Blake THIS PERSON | 60 | Wife | — | Vermont |
| 18 | James Blake | 29 | Son | Stenographer | New Jersey |
| 19 | George Blake | 28 | Son | Mechanic | New Jersey |
| 20 | Alice Blake | 23 | Daughter | Inspector | Kentucky |
| 21 | Catherine Green | 45 | Cousin | Book Repair | New York |
| 22 | James J. Shanley | 50 | Lodger | Inspector | New Jersey |
| 23 | James Lovett | 50 | Lodger | Gas Sta. Attendant | Maine |
| 24 | Thomas Krezinski | 58 | Head | Proprietor | Poland |
| 25 | Hattie Krezinski | 51 | Wife | — | Russia |
| 26 | Leonard Krezinski | 25 | Son | Dentist | New Jersey |
| 27 | Charles Deering | 37 | Head | Produce Dealer | New Jersey |
| 28 | Caroline Deering | 33 | Wife | — | New Jersey |
| 29 | Delores Deering | 14 | Daughter | — | New Jersey |
| 30 | Richard Deering | 13 | Son | — | New Jersey |
| 31 | Frank Keefer | 60 | Head | Bartender | Austria |
| 32 | Mary Keefer | 55 | Wife | — | Austria |
| 33 | Joseph Keefer | 35 | Son | Office Clerk | Austria |
| 34 | Helen Keefer | 31 | Daughter | — | New Jersey |
| 35 | Sam Lendon | 34 | Son | Cigarette Vending | Italy |
| 36 | James J. Shanley | 53 | Lodger | Civil Servant | New Jersey |
| 37 | Jas S. Merritt | 49 | Lodger | Chauffeur | New York |
| 38 | Ezra D. Pollock | 23 | Head | Foreman | Montana |
| 39 | Helen M. Pollock | 27 | Wife | — | West Virginia |
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)