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Lois Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Maricopa-County, Arizona
Our Model Tree links this Lois Williams across the 1930 and 1940 US Censuses in Maricopa-County, Arizona (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Arizona
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Maricopa-County, Arizona |
| Surname | Williams |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Tempe city |
| 1935 Residence (County) | Maricopa |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same house |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Township / Ward | Tempe City |
| Est. Birth Year | ~1929 |
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 Lois | Age | Birth yr |
|---|---|---|---|---|
| Marjorie Williams | Daughter | — | 15 | ~1925 |
| Shirley Williams | Daughter | — | 5 | ~1935 |
| Frances Williams | Daughter | — | 12 | ~1928 |
| Lois Williams | Daughter | — | 11 | ~1929 |
| Sydney Williams | Head | — | 42 | ~1898 |
| Marvin Williams | Son | — | 7 | ~1933 |
| Albert Williams | Son | — | 3 | ~1937 |
| Bertha Williams | Spouse | — | 34 | ~1906 |
Census Appearances
1930
Maricopa, Arizona
Daughter, age 1
Maricopa, Arizona · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Arizona |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1940
Maricopa-County, Arizona
Daughter, age 11
Maricopa-County, Arizona · implied b. ~1929 — 8 household members
| Surname | Williams |
| Given Name | Lois |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Tempe city |
| 1935 Residence (County) | Maricopa |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same house |
| 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 Lois Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lois Williams
Daughter · 1940 · age 11 · b. ~1929 · Arizona
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Sibling
Frances Williams
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marvin Williams
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Williams
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Williams
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Williams
Sibling · 1940 · age 15
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-t0627-00106-00331)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William T. Griffith | 67 | Head | — | Montana |
| 2 | Mary J. Q. Griffith | 66 | Wife | — | Missouri |
| 3 | Willie Cowan | 27 | Head | Welder | Montana |
| 4 | Robert James Potter | 45 | Head | — | Minnesota |
| 5 | Alvina A. Potter | 40 | Wife | — | Minnesota |
| 6 | Inez Mary Potter | 18 | Daughter | — | Minnesota |
| 7 | James Potter | 17 | Son | — | Minnesota |
| 8 | Beatrice Potter | 15 | Daughter | — | Minnesota |
| 9 | Enriquez Bojorquez | 65 | Head | Cow-Boy | Mexico |
| 10 | Paz Bojorquez | 55 | Wife | — | Arizona |
| 11 | Joe B. Bojorquez | 30 | Son | Common Labor | Arizona |
| 12 | Edward Bojorquez | 26 | Son | Common Labor | Arizona |
| 13 | Bertilda Bojorquez | 16 | Daughter | Housework | Arizona |
| 14 | Arthur Bojorquez | 18 | Son | Cow-Boy | Arizona |
| 15 | Donald Brasfield | 39 | Head | Hardware Salesman | Missouri |
| 16 | Alta Brasfield | 36 | Wife | — | Arizona |
| 17 | Henry C. B. Ruppenthal | 64 | Head | Rural Letter Carrier | Pennsylvania |
| 18 | Edna M. Ruppenthal | 52 | Wife | — | Kansas |
| 19 | James Q. Meible | 62 | Head | — | New York |
| 20 | Mary E. Moss | 70 | Head | — | Tennessee |
| 21 | Charles Moss | 31 | Son | Assistant Manager | Arizona |
| 22 | Lynnd B. Q. Ellis | 34 | Head | Truck Driver | New York |
| 23 | Gwendolyn Ellis | 29 | Wife | — | New York |
| 24 | Robert Ellis | 2 | Son | — | New York |
| 25 | Charles R. Harris | 60 | Head | Plumbing | Texas |
| 26 | Betty Mae Harris | 69 | Wife | — | Texas |
| 27 | Sydney Williams | 42 | Head | Flour Salesman | Iowa |
| 28 | Bertha D. Williams | 34 | Wife | — | Arizona |
| 29 | Marjorie Williams | 15 | Daughter | — | Arizona |
| 30 | Frances Williams | 12 | Daughter | — | Arizona |
| 31 | Lois Williams THIS PERSON | 11 | Daughter | — | Arizona |
| 32 | Marvin Williams | 7 | Son | — | Arizona |
| 33 | Shirley Williams | 5 | Daughter | — | Arizona |
| 34 | Albert Williams | 3 | Son | — | Arizona |
| 35 | Chester A. Smith | 46 | Head | Assistant Manager | Washington |
| 36 | Clara M. Smith | 35 | Wife | — | Iowa |
| 37 | Chester A. Jr. Smith | 16 | Son | — | Arizona |
| 38 | Charlie L. Smith | 15 | Son | — | Arizona |
| 39 | Clifford H. Smith | 14 | Son | — | Arizona |
| 40 | Geneva Rhodes | 34 | Head | — | Illinois |
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)