JW
Joseph Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Maricopa-County, Arizona
Our Model Tree links this Joseph Williams across the 1930 and 1940 US Censuses in Maricopa-County, Arizona (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 13-person household.
Age 10
b. ~1930
Male
Son
Born: Arizona
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Maricopa-County, Arizona |
| Surname | Williams |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Phoenix City |
| 1935 Residence (County) | Maricopa |
| Additional Details | |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Township / Ward | Phoenix City |
| Est. Birth Year | ~1930 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Jean Williams | Daughter | — | 14 | ~1926 |
| Zenobia Williams | Daughter | — | 17 | ~1923 |
| Margaret Williams | Daughter | — | 9 | ~1931 |
| Mary Cook | Head | — | 46 | ~1894 |
| John Williams | Son | — | 19 | ~1921 |
| Leslie Williams | Son | — | 1 | ~1939 |
| David Williams | Son | — | 11 | ~1929 |
| Charles Williams | Son | — | 21 | ~1919 |
| Paul Williams | Son | — | 2 | ~1938 |
| Garnett Williams | Son | — | 5 | ~1935 |
| Joseph Williams | Son | — | 10 | ~1930 |
| Lucy Williams | Son | — | 6 | ~1934 |
| Harry Williams | Son | — | 13 | ~1927 |
Census Appearances
1930
Maricopa, Arizona
Son, age
Maricopa, Arizona · implied b. ~1930 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Arizona |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1940
Maricopa-County, Arizona
Son, age 10
Maricopa-County, Arizona · implied b. ~1930 — 13 household members
| Surname | Williams |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Phoenix City |
| 1935 Residence (County) | Maricopa |
| Highest Grade | No 2 |
| 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 Joseph Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Williams
Son · 1940 · age 10 · b. ~1930 · Arizona
★ You are viewing this record
Sibling
Lucy Williams
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Williams
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Williams
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Williams
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Williams
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leslie Williams
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Garnett Williams
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Williams
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Zenobia Williams
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Williams
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Williams
Sibling · 1940 · age 14
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-t0627-00105-00900)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Augustina Leon | 48 | Head | Housework | Mexico |
| 2 | Ray Leon | 7 | Son | — | Arizona |
| 3 | Eddie Leon | 4 | Son | — | Arizona |
| 4 | Amelia Delgado | 24 | Niece | Picking Berries | New Mexico |
| 5 | Rosie Sanchez | 1 | Niece | 0 | Arizona |
| 6 | Robert Valencia | 59 | Head | Storekeeper | Mexico |
| 7 | Ophelia Valencia | 31 | Wife | — | Mexico |
| 8 | Virginia Valencia | 15 | Daughter | — | Arizona |
| 9 | Desiderio Uruezu | 45 | Head | Laborer | Arizona |
| 10 | Luce Uruezu | 40 | Wife | — | Mexico |
| 11 | Gustavo G. Bojarquez | 19 | Step-son | Truck Unloader | Arizona |
| 12 | Guillermo W. Bojarquez | 14 | Step-son | — | Mexico |
| 13 | Lois Valenzuela | 23 | Head | Housework | Texas |
| 14 | Olivia Valenzuela | 2 | Daughter | 0 | Arizona |
| 15 | Mary Soto | 15 | Sister | Housework | California |
| 16 | Juanita Soto | 13 | Sister | — | Arizona |
| 17 | Bonifacio Rodriguez | 43 | Head | Broommaker | Mexico |
| 18 | Modesta Rodriguez | 35 | Wife | — | Mexico |
| 19 | Marina Rodriguez | 19 | Daughter | Housekeeper | Texas |
| 20 | Rosenda Rodriguez | 18 | Daughter | New Worker | Texas |
| 21 | Roman Rodriguez | 16 | Son | — | Texas |
| 22 | Harold Rarrigue | 41 | Head | Elevator Operator | Missouri |
| 23 | Martha Rarrigue | 35 | Wife | Maid | Louisiana |
| 24 | Mary Cook | 46 | Head | — | Arizona |
| 25 | Charles Williams | 21 | Son | Laborer | Arizona |
| 26 | John Williams | 19 | Son | Trucker Stacker | Arizona |
| 27 | Zenobia Williams | 17 | Daughter | — | Arizona |
| 28 | Jean Williams | 14 | Daughter | — | Arizona |
| 29 | Harry Williams | 13 | Son | — | Arizona |
| 30 | David Williams | 11 | Son | — | Arizona |
| 31 | Joseph Williams THIS PERSON | 10 | Son | — | Arizona |
| 32 | Margaret Williams | 9 | Daughter | — | Arizona |
| 33 | Lucy Williams | 6 | Son | — | Arizona |
| 34 | Garnett Williams | 5 | Son | — | Arizona |
| 35 | Paul Williams | 2 | Son | — | Arizona |
| 36 | Leslie Williams | 1 | Son | — | Arizona |
| 37 | Frank Darce | 30 | Head | Storekeeper | Mexico |
| 38 | Mary Louise Darce | 30 | Wife | — | Mexico |
| 39 | Charlie Lugo | 13 | Brother-in-law | — | Arizona |
| 40 | Franquillino Mendez | 24 | Head | Laborer | Arizona |
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)