MC
Marion Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Maricopa-County, Arizona
Our Model Tree links this Marion Clark across the 1930 and 1940 US Censuses in Maricopa-County, Arizona (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: Arizona
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Maricopa-County, Arizona |
| Surname | Clark |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Phoenix city |
| 1935 Residence (County) | Maricopa |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same house |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Township / Ward | Phoenix 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marion | Age | Birth yr |
|---|---|---|---|---|
| Herbert Clark | Son | — | 15 | ~1925 |
| Marion Clark | Daughter | — | 11 | ~1929 |
| Harold Clark | Head | — | 46 | ~1894 |
| Ursula Clark | Spouse | — | 47 | ~1893 |
| Anne Clark | Daughter | — | 10 | ~1930 |
| Carol Clark | Daughter | — | 6 | ~1934 |
| Margaret Clark | Daughter | — | 12 | ~1928 |
Census Appearances
1930
Maricopa, Arizona
Daughter, age 1
Maricopa, Arizona · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Myrian V. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Kentucky |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1940
Maricopa-County, Arizona
Daughter, age 11
Maricopa-County, Arizona · implied b. ~1929 — 7 household members
| Surname | Clark |
| Given Name | Marion |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Phoenix city |
| 1935 Residence (County) | Maricopa |
| Highest Grade | 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 Marion Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marion Clark
Daughter · 1940 · age 11 · b. ~1929 · Arizona
★ You are viewing this record
Sibling
Carol Clark
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anne Clark
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Clark
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herbert Clark
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-t0627-00104-00372)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Ed. | 4 | — | — | Arizona |
| 42 | Judith Ann | 2 | — | — | Arizona |
| 43 | C. E. Freeman | 36 | Head | Business Manager | Kansas |
| 44 | Emma Freeman | 35 | Wife | — | Illinois |
| 45 | Virginia Jean Freeman | 10 | Daughter | — | California |
| 46 | Richard Freeman | 8 | Son | — | California |
| 47 | Francis B. Vining | 39 | Head | Insurance Agent | Colorado |
| 48 | Edith Vining | 39 | Wife | — | Kansas |
| 49 | Alfred Schuler | 39 | Brother-in-law | Salesman | Kansas |
| 50 | James Pritikam | 52 | Head | Inspector | Ohio |
| 51 | Marcile S. Pritikam | 43 | Wife | — | Nevada |
| 52 | — | None | — | — | — |
| 53 | Alfred D. Nace | 59 | Head | Meat Cutter | Pennsylvania |
| 54 | Maggie B. Nace | 54 | Wife | — | Pennsylvania |
| 55 | Florence Nace | 37 | Daughter | Cashier | Pennsylvania |
| 56 | Evelyn Nace | 36 | Daughter | Nurse | Pennsylvania |
| 57 | Francis Peal | 39 | Head | Salesman | Arizona |
| 58 | Ruth Peal | 39 | Wife | — | New Mexico |
| 59 | Marion Peal | 17 | Daughter | — | Arizona |
| 60 | Mary Francis Peal | 7 | Daughter | — | Arizona |
| 61 | W. W. Davies | 31 | Head | Salesman | Arizona |
| 62 | Eleanor K. Davies | 28 | Wife | — | Arizona |
| 63 | Caroline Davies | 2 | Daughter | — | Arizona |
| 64 | Harold M. Clark | 46 | Head | Manager & Owner | Illinois |
| 65 | Ursula Clark | 47 | Wife | — | Kentucky |
| 66 | Herbert Clark | 15 | Son | — | California |
| 67 | Margaret C. Clark | 12 | Daughter | — | Arizona |
| 68 | Marion Clark THIS PERSON | 11 | Daughter | — | Arizona |
| 69 | Anne Clark | 10 | Daughter | — | Arizona |
| 70 | Carol Clark | 6 | Daughter | — | Arizona |
| 71 | Leslie Smith | 34 | Head | Medical Doctor | Kansas |
| 72 | Maude Smith | 33 | Wife | — | Kansas |
| 73 | Theresa Smith | 8 | Daughter | — | Kansas |
| 74 | Preston Smith | 3 | Son | — | Arizona |
| 75 | Vesta Smith | 26 | Sister | Teacher | Kansas |
| 76 | Duncan Raymon | 64 | Head | Teaching | Missouri |
| 77 | Martha R. Raymon | 50 | Sister | — | Missouri |
| 78 | Kathern Raymon | 59 | Sister | — | Missouri |
| 79 | J. Harold Hayes | 42 | Head | Real Estate Co. | Kansas |
| 80 | Lena Hayes | 43 | Wife | — | Kansas |
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)