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Frank Cox — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Missouri
Our Model Tree links this Frank Cox across the 1930 and 1940 US Censuses in Marion-County, Missouri (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 12-person household.
Age 16
b. ~1924
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Missouri |
| Surname | Cox |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Hannibal |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Hannibal |
| Est. Birth Year | ~1924 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Chester Cox | Son | — | 29 | ~1911 |
| Soli Cox | Other | — | 2 | ~1938 |
| Mary Cox | Daughter | — | 19 | ~1921 |
| George Cox | Son | — | 38 | ~1902 |
| Albert Cox | Son | — | 24 | ~1916 |
| Charles Cox | Son | — | 31 | ~1909 |
| William Cox | Son | — | 13 | ~1927 |
| Frank Cox | Son | — | 16 | ~1924 |
| James Cox | Son | — | 21 | ~1919 |
| Mary Cox | Spouse | — | 59 | ~1881 |
| Hatfield Cox | Daughter | — | 22 | ~1918 |
| John Cox | Head | — | 61 | ~1879 |
Census Appearances
1930
Marion, Missouri
Son, age 6
Marion, Missouri · implied b. ~1924 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Franklin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Marion-County, Missouri
Son, age 16
Marion-County, Missouri · implied b. ~1924 — 12 household members
| Surname | Cox |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Hannibal |
| 1935 Residence (County) | Marion |
| Income (1939) | 0 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Frank Cox across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Frank Cox
Son · 1940 · age 16 · b. ~1924 · Missouri
★ You are viewing this record
Sibling
Mary Cox
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Cox
Sibling · 1940 · age 38
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Cox
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Cox
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Chester Cox
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Cox
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Cox
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hatfield Cox
Sibling · 1940 · age 22
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 — Marion-County, Missouri
Open full size
1940 US Federal Census — Marion-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02128-00361)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Fayette Cox | 16 | Daughter | — | Missouri |
| 42 | Ida Cox | 12 | Daughter | — | Missouri |
| 43 | John Cox | 61 | Head | Toll Collector | Missouri |
| 44 | Mary Cox | 59 | Wife | — | Missouri |
| 45 | George Cox | 38 | Son | Mechanic | Missouri |
| 46 | Charles Cox | 31 | Son | Roofer | Missouri |
| 47 | Albert Cox | 24 | Son | Painter | Missouri |
| 48 | Chester Cox | 29 | Son | Attendant | Missouri |
| 49 | James Cox | 21 | Son | Employee | Missouri |
| 50 | Mary Cox | 19 | Daughter | — | Missouri |
| 51 | Frank Cox THIS PERSON | 16 | Son | — | Missouri |
| 52 | William Cox | 13 | Son | — | Missouri |
| 53 | Hatfield Dorothy Cox | 22 | Daughter | — | Missouri |
| 54 | Soli Eugene Cox | 2 | Grandson | — | Missouri |
| 55 | Pauline Sherman | 56 | Head | Cementer | Missouri |
| 56 | Lawrence Sherman | 27 | Son | Driver | Missouri |
| 57 | Harvey Sherman | 20 | Son | Laborer | Missouri |
| 58 | Jacob Pruisner | 47 | Partner | — | Missouri |
| 59 | Boyd Melvin | 47 | Head | Sander | Illinois |
| 60 | Virgil Melvin | 17 | Son | — | Illinois |
| 61 | Pauline Melvin | 13 | Daughter | — | Illinois |
| 62 | Anna Melvin | 72 | Mother | — | Illinois |
| 63 | Earl Magers | 38 | Head | Blaster | Missouri |
| 64 | Bessie Magers | 32 | Wife | — | Missouri |
| 65 | Plesa Magers | 13 | Son | — | Missouri |
| 66 | Victor Magers | 9 | Son | — | Missouri |
| 67 | Earl Magers | 7 | Son | — | Missouri |
| 68 | Evelyn Magers | 4 | Daughter | — | Missouri |
| 69 | Le Roy Magers | 2 | Son | — | Missouri |
| 70 | Louisa Essig | 60 | Head | — | Germany |
| 71 | Bryan Sigler | 42 | Head | Paper Hanger|Painter | Missouri |
| 72 | Katherine Sigler | 34 | Wife | — | Missouri |
| 73 | Ruby Sigler | 16 | Daughter | — | Missouri |
| 74 | Leonora Sigler | 11 | Son | — | Missouri |
| 75 | Glenn Quinlan | 22 | Head | Inspector | Missouri |
| 76 | Mildred Quinlan | 19 | Wife | — | Missouri |
| 77 | Patsy Quinlan | 2 | Daughter | — | Missouri |
| 78 | James Quigley | 29 | Head | Laborer | Missouri |
| 79 | Kate Quigley | 27 | Wife | — | Missouri |
| 80 | Kathleen Quigley | 1 | Daughter | — | Missouri |
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)