MD
Mary Dalton — 1940 US Census Record
Model Tree available1940 United States Federal Census · Maricopa-County, Arizona
Our Model Tree links this Mary Dalton across the 1920, 1930 and 1940 US Censuses in Maricopa-County, Arizona (XGBoost, ~Confirmed), with identified parents Christopher & Christopher — first a daughter (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Female
Daughter
Born: Arizona
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Maricopa-County, Arizona |
| Surname | Dalton |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Phoenix City |
| 1935 Residence (County) | Maricopa |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 936 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Occupation | Bookkeeper |
| Township / Ward | Phoenix City |
| Est. Birth Year | ~1916 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Leona Dalton | Daughter | — | 23 | ~1917 |
| Christopher Dalton | Head | — | 65 | ~1875 |
| Mary Dalton | Daughter | — | 24 | ~1916 |
| Thomas Dalton | Son | — | 27 | ~1913 |
| Michael Dalton | Son | — | 29 | ~1911 |
| Mary Dalton | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Maricopa, Arizona
Daughter, age 5
Maricopa, Arizona · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dalton |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | New York |
| Mother's Birthplace | Iowa |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1930
Maricopa, Arizona
Daughter, age 15
Maricopa, Arizona · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dalton |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | New York |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1940
Maricopa-County, Arizona
Daughter, age 24
Maricopa-County, Arizona · implied b. ~1916 — 6 household members
| Surname | Dalton |
| Given Name | Mary Ellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Phoenix City |
| 1935 Residence (County) | Maricopa |
| Occupation | Bookkeeper |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 936 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
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 Dalton across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Christopher Dalton (~0.92 confidence) and father Christopher Dalton (~0.92 confidence) and mother Mary Dalton (~0.92 confidence) and mother Marie Dalton (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Christopher Dalton
b. ~1849
Source father
● Household
· direct · ~0.92
Father
Christopher Dalton
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mary Dalton
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Marie Dalton
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Dalton
Daughter · 1940 · age 24 · b. ~1916 · Arizona
★ You are viewing this record
Sibling
Michael Dalton
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Dalton
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leona Dalton
Sibling · 1940 · age 23
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 — Maricopa-County, Arizona
Open full size
1940 US Federal Census — Maricopa-County, Arizona
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00104-00676)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Leota Wilson | 31 | Wife | Cashier | Texas |
| 42 | Beverly J Wilson | 9 | Daughter | — | Arizona |
| 43 | William Dyer | 17 | Son | — | Montana |
| 44 | Beverly Dyer | 16 | Daughter | — | Montana |
| 45 | Paul Lenz | 25 | Head | Clerk | Arizona |
| 46 | Aurora O Lenz | 25 | Wife | Seller | California |
| 47 | Jacqueline Lenz | 3 | Daughter | — | California |
| 48 | Harry O Wintz | 29 | Head | Patrolman | Washington |
| 49 | Jane Wintz | 27 | Wife | — | Arizona |
| 50 | Judith Wintz | 0 | Daughter | — | Arizona |
| 51 | Barbara Parrish | 9 | Daughter | — | Arizona |
| 52 | Samuel O Bell | 57 | Head | Tailor | Russia |
| 53 | Hazel P Williams | 25 | Head | Stenographer | Oklahoma |
| 54 | Mattie Roberts | 62 | Mother | — | Tennessee |
| 55 | Jane Francis Ross | 65 | Head | Nurse | Ireland |
| 56 | Violet O Vayers | 65 | Head | — | Iowa |
| 57 | Ernest L Vayers | 40 | Son | Engineer | Iowa |
| 58 | Henrietta Vayers | 27 | Daughter | — | Missouri |
| 59 | Christopher Dalton | 65 | Head | Operator | New York |
| 60 | Mary E Dalton | 60 | Wife | — | Ireland |
| 61 | Michael John Dalton | 29 | Son | Operator | Arizona |
| 62 | Thomas Dalton | 27 | Son | Asst Operator | Arizona |
| 63 | Mary Ellen Dalton THIS PERSON | 24 | Daughter | Bookkeeper | Arizona |
| 64 | Leona Kathleen Dalton | 23 | Daughter | Cashier | Arizona |
| 65 | Susan Van Adams | 45 | Head | Seamstress | Texas |
| 66 | Lloyd Adams | 22 | Son | — | Arizona |
| 67 | Theo E Herman | 55 | Head | Bookkeeper | Iowa |
| 68 | Marion E Munsil | 56 | Head | Carpenter | Nebraska |
| 69 | Martha Lois Munsil | 46 | Wife | — | Nebraska |
| 70 | George L O Wilson | 30 | Head | Mechanic | Missouri |
| 71 | Wilson | 27 | Wife | — | California |
| 72 | James K Wilson | 6 | Son | — | California |
| 73 | Erma L O Cole | 36 | Head | Operator | Washington |
| 74 | Ray Cole | 16 | Son | News Vendor | Missouri |
| 75 | Henry O Stienbeck | 33 | Head | — | California |
| 76 | Leona Stienbeck | 30 | Wife | Janitress | California |
| 77 | Dorothy Stienbeck | 12 | Daughter | — | California |
| 78 | Beverly Stienbeck | 10 | Daughter | — | California |
| 79 | Edward G O Homes | 24 | Head | Bookkeeper | New York |
| 80 | Viola M Homes | 21 | Wife | Cashier | Illinois |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 4 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)