JC
John Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Navajo-County, Arizona
Our Model Tree links this John Clark across the 1920, 1930 and 1940 US Censuses in Navajo-County, Arizona (XGBoost, ~Confirmed), with identified parents William & Mary — first a head (b.~1906), then head of a 3-person household.
Age 34
b. ~1906
Male
Head
Born: New Mexico
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Navajo-County, Arizona |
| Surname | Clark |
| Given Name | John P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | New Mexico |
| 1935 Residence (City) | Holbrook Town |
| 1935 Residence (County) | Navajo |
| Additional Details | |
| Occupation | Judge |
| Industry | Navajo County Superior Court |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3800 |
| Highest Grade | C 5 |
| 1935 Residence | Same place |
| Birth State | New Mexico |
| Birth Country | United States |
| Birthplace (normalized) | new mexico |
| Occupation | Judge |
| Township / Ward | Holbrook Town |
| Est. Birth Year | ~1906 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Carole Clark | Daughter | — | 6 | ~1934 |
| John Clark | Head | — | 34 | ~1906 |
| Mildred Clark | Spouse | — | 30 | ~1910 |
Census Appearances
1920
Navajo, Arizona
Son, age 14
Navajo, Arizona · implied b. ~1906 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | John Paul |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New Mexico |
| Father's Birthplace | Illinois |
| Mother's Birthplace | California |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Mexico |
| Birth Country | United States |
| Birthplace (normalized) | new mexico |
1930
Navajo, Arizona
Son, age 24
Navajo, Arizona · implied b. ~1906 — 16 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | John P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | New Mexico |
| Father's Birthplace | Illinois |
| Mother's Birthplace | California |
| Occupation | Attorney |
| Industry | Attorney's Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Mexico |
| Birth Country | United States |
| Birthplace (normalized) | new mexico |
1940
Navajo-County, Arizona
Head, age 34
Navajo-County, Arizona · implied b. ~1906 — 3 household members
| Surname | Clark |
| Given Name | John P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | New Mexico |
| 1935 Residence (City) | Holbrook Town |
| 1935 Residence (County) | Navajo |
| Occupation | Judge |
| Industry | Navajo County Superior Court |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3800 |
| Highest Grade | C 5 |
| 1935 Residence | Same place |
| Birth State | New Mexico |
| Birth Country | United States |
| Birthplace (normalized) | new mexico |
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 John Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Calloway (~0.60 confidence) and mother Mary Calloway (~0.92 confidence) and father Edward Clark (~0.92 confidence) and mother Mary Clark (~0.92 confidence) and mother Mary Clark (~0.92 confidence) and father William Crozer (~0.92 confidence) and mother Anna Crozer (~0.92 confidence) and father John La Gear (~0.92 confidence) and mother May La Gear (~0.92 confidence) and father Arthur Switzer (~0.92 confidence) and mother Mona Switzer (~0.92 confidence). The pedigree spans 1 generation with 11 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.89
Father
William Calloway
b. ~1904
Source father
● Household
· direct · ~0.6
Mother
Mary Calloway
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
Edward Clark
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Mary Clark
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Mary Clark
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
William Crozer
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Anna Crozer
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
John La Gear
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
May La Gear
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
Arthur Switzer
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Mona Switzer
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Clark
Head · 1940 · age 34 · b. ~1906 · Arizona
★ 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 — Navajo-County, Arizona
Open full size
1940 US Federal Census — Navajo-County, Arizona
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00110-00286)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen P Senson | 12 | Daughter | School | New Mexico |
| 2 | Betsy Parks | 22 | Lodger | Bookkeeper | Texas |
| 3 | Ada Franklin | 18 | Lodger | Maid | Arizona |
| 4 | Earl Insley | 28 | Head | Teacher | Missouri |
| 5 | Mary Insley | 25 | Wife | — | Arizona |
| 6 | Evelyn Insley | 1 | Daughter | — | Arizona |
| 7 | Walker Barlow | 35 | Head | Truck Driver | Texas |
| 8 | Letha Barlow | 25 | Wife | — | Texas |
| 9 | Lorraine Barlow | 6 | Daughter | — | Texas |
| 10 | John Scott | 34 | Head | Sub Manager | Colorado |
| 11 | Anne Scott | 29 | Wife | Judge | Arizona |
| 12 | John P Clark THIS PERSON | 34 | Head | Judge | New Mexico |
| 13 | Mildred Clark | 30 | Wife | — | Kansas |
| 14 | Carole Clark | 6 | Daughter | — | Arizona |
| 15 | Edward S Goldman | 36 | Head | Bookkeeper | Minnesota |
| 16 | Bettie Goldman | 35 | Wife | — | Hungary |
| 17 | Howard Goldman | 10 | Son | — | Minnesota |
| 18 | Alice Goldman | 2 | Daughter | — | Minnesota |
| 19 | Alton Duke | 30 | Head | Crop Inspector | Arizona |
| 20 | Ealine Duke | 28 | Wife | — | Arizona |
| 21 | Stanley Duke | 7 | Son | — | Arizona |
| 22 | Steven Duke | 5 | Son | — | Arizona |
| 23 | Winsted Hensley | 33 | Head | Comerical Teacher | Illinois |
| 24 | Janet Hensley | 24 | Wife | — | Arizona |
| 25 | Gerald R Hensley | 6 | Son | — | Arizona |
| 26 | David C Hensley | 2 | Son | — | Arizona |
| 27 | Edgar Humphrey | 64 | Head | Bookkeeper | Kentucky |
| 28 | Sallie Humphrey | 55 | Wife | Salesman | Texas |
| 29 | Otho Nichols | 36 | Head | Salesman | New Mexico |
| 30 | Myrtice Nichols | 33 | Wife | — | Texas |
| 31 | Landon Nichols | 4 | Son | — | Texas |
| 32 | Walter Messord | 44 | Head | Auto Mechanic | Missouri |
| 33 | Neola Messord | 29 | Wife | — | Missouri |
| 34 | Roy Richards | 33 | Head | Auto Mechanic | Oklahoma |
| 35 | Ruth Richards | 35 | Wife | — | Arizona |
| 36 | Jackie R Richards | 3 | Daughter | — | Arizona |
| 37 | Edward Richards | 1 | Son | — | Arizona |
| 38 | Robert K Richards | 0 | Son | — | Arizona |
| 39 | George W Mcinturff | 80 | Head | — | Texas |
| 40 | Frances Mcinturff | 76 | Wife | — | Tenn |
Pedigree Summary
John
Gen 1 · 11 parents
~0.89
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)