MH
Mary Hickman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Coal-County, Oklahoma
Our Model Tree links this Mary Hickman across the 1920, 1930 and 1940 US Censuses in Coal-County, Oklahoma (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 4-person household.
Age 73
b. ~1867
Female
Head
Born: Tennessee
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Coal-County, Oklahoma |
| Surname | Hickman |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Tennessee |
| 1935 Residence (City) | Ashflat Township |
| 1935 Residence (County) | Coal |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
| Township / Ward | Ashflat Township |
| Est. Birth Year | ~1867 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bessie Collins | Daughter | — | 1 | ~1939 |
| Ima Collins | Daughter | — | 44 | ~1896 |
| Mary Hickman | Head | — | 73 | ~1867 |
| James Collins | Other | — | 4 | ~1936 |
Census Appearances
1920
Coal, Oklahoma
Spouse, age 54
Coal, Oklahoma · implied b. ~1866 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hickman |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Tennessee |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1930
Coal, Oklahoma
Other, age 64
Coal, Oklahoma · implied b. ~1866 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hickman |
| Given Name | Mary L |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Tennessee |
| Age at First Marriage | 20 |
| Father's Birthplace | Tennessee |
| Mother's Birthplace | Tennessee |
| Can Read/Write | Yes |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
1940
Coal-County, Oklahoma
Head, age 73
Coal-County, Oklahoma · implied b. ~1867 — 4 household members
| Surname | Hickman |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Tennessee |
| 1935 Residence (City) | Ashflat Township |
| 1935 Residence (County) | Coal |
| Class of Worker | 0 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Tennessee |
| Birth Country | United States |
| Birthplace (normalized) | tennessee |
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 Mary Hickman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Hickman
Head · 1940 · age 73 · b. ~1867 · Oklahoma
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Coal-County, Oklahoma
Open full size
1940 US Federal Census — Coal-County, Oklahoma
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03285-00043)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William J. Jr. Williams | 14 | Son | Farm Labor | Oklahoma |
| 2 | Wilma Williams | 8 | Daughter | — | Oklahoma |
| 3 | James Williams | 1 | Son | — | Oklahoma |
| 4 | Aubrey Robinson | 24 | Head | Farm Labor | Oklahoma |
| 5 | Letha Robinson | 19 | Wife | House Keeper | Oklahoma |
| 6 | Alice Dumas | 44 | Mother-in-law | — | Arkansas |
| 7 | John W. Peters | 70 | Head | — | Texas |
| 8 | Missouri A. Peters | 63 | Wife | — | Texas |
| 9 | Arvin Rhoma James | 22 | Head | — | Oklahoma |
| 10 | Benjamin D. James | 56 | Son | Farm Labor | Oklahoma |
| 11 | Jessie Parris | 30 | Granddaughter | House Keeper | Oklahoma |
| 12 | Mildred L. Parris | 9 | Great granddaughter | — | Oklahoma |
| 13 | Lee Charles Parris | 5 | Great grandson | — | Oklahoma |
| 14 | Mary Nan Parris | 3 | Great granddaughter | — | Oklahoma |
| 15 | Smith E. Kimbro | 51 | Head | Farmer | Arkansas |
| 16 | Eula E. Kimbro | 46 | Wife | — | Arkansas |
| 17 | John D. Kimbro | 25 | Son | — | Arkansas |
| 18 | Raymond R. Kimbro | 17 | Son | Farm Labor | Arkansas |
| 19 | A. C. Kimbro | 7 | Son | — | Oklahoma |
| 20 | Mary Hickman THIS PERSON | 73 | Head | — | Tennessee |
| 21 | Ima Collins | 44 | Daughter | House Keeper | Oklahoma |
| 22 | James Collins | 4 | Grandson | — | Oklahoma |
| 23 | Bessie Collins | 1 | Daughter | — | Oklahoma |
| 24 | Hershel H. Hickman | 36 | Head | Farmer | Oklahoma |
| 25 | Velma Hickman | 26 | Wife | — | Oklahoma |
| 26 | Mary G. Hickman | 6 | Daughter | — | Oklahoma |
| 27 | Barbara J. Hickman | 4 | Daughter | — | Oklahoma |
| 28 | Bobbie H. Hickman | 2 | Son | — | Oklahoma |
| 29 | Corylon Hickman | 0 | Daughter | — | Oklahoma |
| 30 | Maud Blair | 63 | Head | — | Mississippi |
| 31 | Milburn Blair | 28 | Son | Farm Labor | Oklahoma |
| 32 | Stanley Blair | 24 | Son | Farm Labor | Oklahoma |
| 33 | Virna Fagan | 22 | Daughter | Farm Labor | Oklahoma |
| 34 | Thompson W. Christian | 65 | Head | — | Arkansas |
| 35 | Allie Lou Christian | 35 | Wife | Farm Labor | Oklahoma |
| 36 | Zonah Christian | 30 | Daughter | House Keeper | Oklahoma |
| 37 | William B. Williams | 40 | Head | Farmer | Oklahoma |
| 38 | Clara Williams | 26 | Wife | — | Oklahoma |
| 39 | Herbert W. Payne | 54 | Head | Farmer | Arkansas |
| 40 | Emma Payne | 49 | Wife | — | Texas |
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)