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Mary Leonard — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Monmouth-County, New Jersey
Our Model Tree links this Mary Leonard across the 1920, 1930 and 1940 US Censuses in Monmouth-County, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 3-person household.
Age 72
b. ~1868
Female
Head
Born: New Jersey
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Monmouth-County, New Jersey |
| Surname | Leonard |
| Given Name | Mary J. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | New Jersey |
| 1935 Residence (City) | Keyport Boro |
| 1935 Residence (County) | Monmouth |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Keyport Boro |
| Est. Birth Year | ~1868 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Stenburgh | Daughter | — | 33 | ~1907 |
| Mary Leonard | Head | — | 72 | ~1868 |
| Daughter Gertrude | Other | — | — |
Census Appearances
1920
Monmouth, New …
Spouse, age 52
Monmouth, New Jersey · implied b. ~1868 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Housekeeper |
| Industry | Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
Head, age 62
Monmouth, New Jersey · implied b. ~1868 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leonard |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Housekeeper |
| Industry | Private Family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | $400 |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Monmouth-County, New …
Head, age 72
Monmouth-County, New Jersey · implied b. ~1868 — 3 household members
| Surname | Leonard |
| Given Name | Mary J. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | New Jersey |
| 1935 Residence (City) | Keyport Boro |
| 1935 Residence (County) | Monmouth |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Leonard 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 Leonard
Head · 1940 · age 72 · b. ~1868 · 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 — Monmouth-County, New Jersey
Open full size
1940 US Federal Census — Monmouth-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02366-00850)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary J. Leonard THIS PERSON | 72 | Head | — | New Jersey |
| 2 | Daughter Gertrude | None | F | Garment Factory | — |
| 3 | Dorothy Stenburgh | 33 | Daughter | Saleslady | New Jersey |
| 4 | Percy D. Siddler | 29 | Head | Mechanic | New Jersey |
| 5 | Ruth Siddler | 28 | Wife | — | New Jersey |
| 6 | Alma Siddler | 10 | Daughter | — | New Jersey |
| 7 | Annamae Siddler | 10 | Daughter | — | New Jersey |
| 8 | Axel Nelson | 34 | Head | Outside Salesman | Denmark |
| 9 | Westery Nelson | 37 | Wife | Bookkeeper | Japan |
| 10 | Edith C. Thurer | 68 | Head | — | New Jersey |
| 11 | Douglas Thurer | 38 | Son | Helper | New York |
| 12 | Chris Thurer | 33 | Son | Lineman | New York |
| 13 | Elaine Thurer | 28 | Daughter | — | New Jersey |
| 14 | Florence Scheff | 46 | Head | Operator | New Jersey |
| 15 | George Scheff | 24 | Son | Carpenter | New Jersey |
| 16 | Marion Scheff | 20 | Daughter | Bookkeeper | New Jersey |
| 17 | Roger Scheff | 18 | Son | Clerk | New Jersey |
| 18 | Beverly Scheff | 13 | Daughter | — | New Jersey |
| 19 | Julius Spell | 33 | Head | Laborer | North Carolina |
| 20 | Bernice Spell | 29 | Wife | — | North Carolina |
| 21 | Elizabeth Spell | 12 | Daughter | — | North Carolina |
| 22 | Nathaniel Fargrave | 53 | Head | Chaplain | North Carolina |
| 23 | Elsie Fargrave | 50 | Wife | — | Virginia |
| 24 | Clarence Fargrave | 17 | Son | — | New York |
| 25 | Thomas Tafman | 43 | Head | Laborer | Virginia |
| 26 | William M. Sproul | 27 | Head | Bookkeeper | New Jersey |
| 27 | Verna Sproul | 28 | Wife | Secretary | New Jersey |
| 28 | Leroy Sproul | 40 | Brother | Salesman | New Jersey |
| 29 | James Hall | 38 | Head | Traffic Manager | New Jersey |
| 30 | Wilma Hall | 34 | Wife | Secretary | New Jersey |
| 31 | Anthony Abarne | 50 | Head | Time Clerk | New York |
| 32 | Janette Abarne | 49 | Wife | Bookkeeper | New York |
| 33 | Augustus Abarne | 24 | Son | Packer | New York |
| 34 | William Holmes | 53 | Head | Painter | New Jersey |
| 35 | Augusta Holmes | 56 | Wife | School Teacher | New Jersey |
| 36 | Ed Ray Holmes | 76 | Mother-in-law | — | New Jersey |
| 37 | Earle Gibbs | 48 | Head | Insurance Agent | New Jersey |
| 38 | Bertha Gibbs | 46 | Wife | — | New York |
| 39 | Irene Gibbs | 21 | Daughter | Clerk | New Jersey |
| 40 | Julius Alpine | 33 | Head | Shoe Salesman | New Jersey |
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)