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Margaret Mason — 1940 US Census Record
Model Tree available1940 United States Federal Census · Rockland-County, New York
Our Model Tree links this Margaret Mason across the 1920, 1930 and 1940 US Censuses in Rockland-County, New York (XGBoost, ~Confirmed), with identified parents John & Joseph — first a daughter (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rockland-County, New York |
| Surname | Mason |
| Given Name | Margaret E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Spring Valley Village |
| 1935 Residence (County) | Rockland |
| Additional Details | |
| Occupation | clerk |
| Industry | laboratory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 750 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Clerk |
| Township / Ward | Spring Valley Village |
| Est. Birth Year | ~1919 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Joseph Mason | Son | — | 9 | ~1931 |
| Margaret Mason | Daughter | — | 21 | ~1919 |
| Joseph Mason | Head | — | 53 | ~1887 |
| Margaret Mason | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Rockland, New …
Daughter, age 1
Rockland, New York · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | England |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Rockland, New …
Daughter, age 11
Rockland, New York · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Margaret A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | England |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Rockland-County, New …
Daughter, age 21
Rockland-County, New York · implied b. ~1919 — 4 household members
| Surname | Mason |
| Given Name | Margaret E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Spring Valley Village |
| 1935 Residence (County) | Rockland |
| Occupation | clerk |
| Industry | laboratory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 750 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 Margaret Mason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mason (~0.92 confidence) and father Joseph Mason (~0.92 confidence) and mother Margaret Mason (~0.92 confidence) and mother Alice Mason (~0.92 confidence) and mother Margaret Mason (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mason
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Joseph Mason
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Margaret Mason
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Alice Mason
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Margaret Mason
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Mason
Daughter · 1940 · age 21 · b. ~1919 · New York
★ You are viewing this record
Sibling
Joseph Mason
Sibling · 1940 · age 9
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 — Rockland-County, New York
Open full size
1940 US Federal Census — Rockland-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02768-00097)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Keeley | 87 | Aunt | — | New York |
| 2 | James Frederick | 54 | Head | Truck Driver | New York |
| 3 | Laura Frederick | 46 | Sister | — | New York |
| 4 | Donald Gillette | 44 | Head | Mechanic | New York |
| 5 | Pauline Gillette | 42 | Wife | — | New York |
| 6 | Jeanne Gillette | 12 | Daughter | — | New York |
| 7 | Adrian Vidal | 44 | Head | Clerk | New York |
| 8 | Hazel Vidal | 47 | Wife | — | New York |
| 9 | Eugene Vidal | 20 | Son | — | New York |
| 10 | Joseph H. Mason | 53 | Head | Special Officer | England |
| 11 | Margaret A. Mason | 49 | Wife | — | Pennsylvania |
| 12 | Margaret E. Mason THIS PERSON | 21 | Daughter | Clerk | New York |
| 13 | Joseph Jr. Mason | 9 | Son | — | New York |
| 14 | August Schneible | 59 | Head | Laborer | New York |
| 15 | Sadie Schneible | 51 | Wife | — | New York |
| 16 | John Froehling | 48 | Head | Merchant | New York |
| 17 | Elsa Froehling | 43 | Wife | — | New York |
| 18 | Mary Conklin | 62 | Mother-in-law | — | New York |
| 19 | Thomas Walsh | 30 | Head | Foreman | New York |
| 20 | Ethel Walsh | 28 | Wife | — | New Jersey |
| 21 | Thomas Jr. Walsh | 7 | Son | — | New York |
| 22 | Anna Klein | 53 | Head | Packer | New York |
| 23 | Christian Klein | 54 | Head | — | New York |
| 24 | Corinne Klein | 26 | Daughter | Cashier | New York |
| 25 | Winona Klein | 22 | Daughter | Operator | New York |
| 26 | Julius Hoffman | 60 | Head | Merchant | Austria |
| 27 | Lena Hoffman | 58 | Wife | — | Austria |
| 28 | Samuel Kern | 44 | Head | — | Delaware |
| 29 | Anna Kern | 36 | Wife | — | New York |
| 30 | Charles Anto | 40 | Head | Teacher | Russia |
| 31 | Regina Anto | 35 | Wife | — | Russia |
| 32 | Beria Anto | 1 | Daughter | — | New York |
| 33 | Abraham Tekel | 45 | Head | Operator | Poland |
| 34 | Ida Tekel | 40 | Wife | — | Poland |
| 35 | Louis Tekel | 16 | Son | — | New York |
| 36 | Philip Tekel | 13 | Son | — | New York |
| 37 | Henry Merchon | 37 | Head | Merchant | Poland |
| 38 | Sarah Merchon | 40 | Wife | — | Russia |
| 39 | Randolph Merchon | 12 | Son | — | New York |
| 40 | Martha Merchon | 8 | Daughter | — | New York |
Pedigree Summary
Margaret + 1 sibling
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)