MM
Margaret Mason — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this Margaret Mason across the 1920, 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 3-person household.
Age 40
b. ~1900
Female
Spouse
Born: France
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Mason |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | France |
| 1935 Residence (City) | Darby Borough |
| 1935 Residence (County) | Delaware |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Sewing Machine Operator |
| Industry | Tailor Shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1104 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | France |
| Birthplace (normalized) | france |
| Occupation | Sewing Machine Operator |
| Township / Ward | Darby Borough |
| Est. Birth Year | ~1900 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Mason | Spouse | — | 40 | ~1900 |
| Bruce Mason | Son | — | 19 | ~1921 |
| Clarence Mason | Head | — | 41 | ~1899 |
Census Appearances
1920
Delaware, Pennsylvania
Other, age 20
Delaware, Pennsylvania · implied b. ~1900 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Martha |
| Relationship to Head | Sister-in-law |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | France |
| Year of Immigration | 1919 |
| Naturalization Status | Alien |
| Father's Birthplace | France |
| Mother's Birthplace | France |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | French |
| Birth Country | France |
| Year of Naturalization | 1919 |
| Birthplace (normalized) | france |
1930
Delaware, Pennsylvania
Spouse, age 30
Delaware, Pennsylvania · implied b. ~1900 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | France |
| Naturalization Status | Naturalized |
| Year of Immigration | 1914 |
| Age at First Marriage | 20 |
| Father's Birthplace | France |
| Mother's Birthplace | France |
| Can Read/Write | Yes |
| Mother Tongue | French |
| Birth Country | France |
| Birthplace (normalized) | france |
1940
Delaware-County, Pennsylvania
Spouse, age 40
Delaware-County, Pennsylvania · implied b. ~1900 — 3 household members
| Surname | Mason |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | France |
| 1935 Residence (City) | Darby Borough |
| 1935 Residence (County) | Delaware |
| Naturalization Status | Naturalized |
| Occupation | Sewing Machine Operator |
| Industry | Tailor Shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1104 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | France |
| Birthplace (normalized) | france |
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.
Show:
This person
Anchor record
Margaret Mason
Spouse · 1940 · age 40 · b. ~1900 · Pennsylvania
★ 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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03490-00825)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Olga Cloud | 20 | Daughter | Time Keeper | Pennsylvania |
| 42 | James Dorsey | 32 | Head | Huckster | Pennsylvania |
| 43 | Mary Dorsey | 27 | Wife | — | Pennsylvania |
| 44 | James Dorsey | 3 | Son | — | Pennsylvania |
| 45 | Patricia Dorsey | 1 | Daughter | — | Pennsylvania |
| 46 | Robert Klotz | 27 | Head | Electrician | Pennsylvania |
| 47 | Mary Klotz | 20 | Wife | — | Virginia |
| 48 | Robert Klotz | 1 | Son | — | Pennsylvania |
| 49 | Francis Sims | 27 | Head | Mailer | Pennsylvania |
| 50 | Edith Sims | 21 | Wife | — | Pennsylvania |
| 51 | Edith Sims | 6 | Daughter | — | Pennsylvania |
| 52 | Howard Humphries | 41 | Brother-in-law | Landscaper | Pennsylvania |
| 53 | Howard Humphries | 7 | Nephew | — | Pennsylvania |
| 54 | Jennie Smith | 27 | Head | — | Pennsylvania |
| 55 | Frederick Smith | 15 | Son | — | Pennsylvania |
| 56 | Frank Smith | 14 | Son | — | Pennsylvania |
| 57 | Mary Smith | 12 | Daughter | — | Pennsylvania |
| 58 | John Oliver | 35 | Head | Stock Clerk | New Jersey |
| 59 | Marie Oliver | 26 | Wife | — | Pennsylvania |
| 60 | Jacquelyn Oliver | 5 | Daughter | — | Pennsylvania |
| 61 | Marie G. Oliver | 3 | Daughter | — | Pennsylvania |
| 62 | Lorretta Oliver | 1 | Daughter | — | Pennsylvania |
| 63 | June Oliver | 0 | Daughter | — | Pennsylvania |
| 64 | Michael Triebl | 25 | Head | Grinder | Pennsylvania |
| 65 | Dorothy Triebl | 24 | Wife | — | Pennsylvania |
| 66 | Margaret Triebl | 1 | Daughter | — | Pennsylvania |
| 67 | Clarence Mason | 41 | Head | Material Clerk | Pennsylvania |
| 68 | Margaret Mason THIS PERSON | 40 | Wife | Sewing Machine Operator | France |
| 69 | Bruce (A.B.) Mason | 19 | Son | Grader | Pennsylvania |
| 70 | John Peoples | 27 | Head | Canister Bomb Filler | Pennsylvania |
| 71 | Charles Peoples | 54 | Father | Marble Setter | Pennsylvania |
| 72 | Mary Peoples | 50 | Mother | — | Pennsylvania |
| 73 | Arthur Peoples | 19 | Brother | — | Pennsylvania |
| 74 | Helen Peoples | 17 | Sister | — | Pennsylvania |
| 75 | Virginia Peoples | 1 | Niece | — | Pennsylvania |
| 76 | William Peoples | 25 | Head | Stenographer | Pennsylvania |
| 77 | Henry Wilt | 28 | Head | Grinder | Pennsylvania |
| 78 | Anna Wilt | 27 | Wife | — | Pennsylvania |
| 79 | Anna Wilt | 8 | Daughter | — | Pennsylvania |
| 80 | Delores Wilt | 6 | Daughter | — | Pennsylvania |
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)