MP
Mary Post — 1940 US Census Record
Model Tree available1940 United States Federal Census · Butler-County, Ohio
Our Model Tree links this Mary Post across the 1920, 1930 and 1940 US Censuses in Butler-County, Ohio (XGBoost, ~Confirmed), with identified parents Arthur & Sebury — first a daughter (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Butler-County, Ohio |
| Surname | Post |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Middletown City |
| 1935 Residence (County) | Butler |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Middletown City |
| Est. Birth Year | ~1912 |
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 |
|---|---|---|---|---|
| Mary Post | Daughter | — | 28 | ~1912 |
| Ralph Post | Son | — | 63 | ~1877 |
| Arthur Post | Head | — | 60 | ~1880 |
| Edith Post | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Butler, Ohio
Daughter, age 7
Butler, Ohio · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Post |
| Given Name | Mary C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Butler, Ohio
Daughter, age 18
Butler, Ohio · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Post |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Butler-County, Ohio
Daughter, age 28
Butler-County, Ohio · implied b. ~1912 — 4 household members
| Surname | Post |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Middletown City |
| 1935 Residence (County) | Butler |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Post across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Arthur Post (~0.92 confidence) and father Sebury Post (~0.92 confidence) and mother Edith Post (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Arthur Post
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Sebury Post
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Edith Post
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Post
Daughter · 1940 · age 28 · b. ~1912 · Ohio
★ You are viewing this record
Sibling
Ralph Post
Sibling · 1940 · age 63
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 — Butler-County, Ohio
Open full size
1940 US Federal Census — Butler-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03035-00481)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | R. C. Jr. Rice | 18 | Boarder | Laborer | Kentucky |
| 42 | Fred Rapp | 81 | Head | — | Ohio |
| 43 | Kendall Strauder | 41 | Head | Shipper | Kentucky |
| 44 | Emma Strauder | 47 | Wife | Checker | Ohio |
| 45 | George Otto St John | 39 | Head | S. M. 1. C. | Ohio |
| 46 | Goldie St John | 34 | Wife | Owner | Ohio |
| 47 | John Ball | 35 | Head | Repairman | Ohio |
| 48 | Effie Ball | 40 | Wife | — | Ohio |
| 49 | Mary Catherine Ball | 21 | Daughter | Stenographer | Ohio |
| 50 | John Ball | 18 | Son | — | Ohio |
| 51 | Victor Button | 56 | Head | Baker | Ohio |
| 52 | May Button | 52 | Wife | — | Indiana |
| 53 | Rachael J. Button | 82 | Mother | — | Ohio |
| 54 | Stanley Belcher | 42 | Head | Laborer | Kentucky |
| 55 | Ethel Belcher | 36 | Wife | — | Kentucky |
| 56 | Wilma Belcher | 15 | Daughter | — | Ohio |
| 57 | Robert Belcher | 14 | Son | — | Ohio |
| 58 | Geraldine Belcher | 6 | Daughter | — | Ohio |
| 59 | Walter Blood | 27 | Head | Machinist | Ohio |
| 60 | Hannah Q. Blood | 23 | Wife | — | Maryland |
| 61 | Walter H. Blood | 0 | Son | — | Ohio |
| 62 | Party Moved To Dayton, Ohio (Cancelled) | None | — | — | — |
| 63 | — | None | — | — | — |
| 64 | Arthur D. Post | 60 | Head | Assembler | Ohio |
| 65 | Edith Post | 49 | Wife | — | Ohio |
| 66 | Mary Post THIS PERSON | 28 | Daughter | — | Ohio |
| 67 | Ralph Post | 63 | Son | — | Ohio |
| 68 | Gordon D. Powell | 28 | Head | Molder Helper | Kentucky |
| 69 | Hazel Powell | 26 | Wife | — | Kentucky |
| 70 | Donald Gene Powell | 6 | Son | — | Kentucky |
| 71 | Mary Elizabeth Powell | 4 | Daughter | — | Kentucky |
| 72 | Daughter Powell | 0 | Daughter | — | Kentucky |
| 73 | Eldon Childers | 27 | Head | Laborer | Kentucky |
| 74 | Pauline Childers | 25 | Wife | — | Kentucky |
| 75 | Eloise Childers | 6 | Daughter | — | Kentucky |
| 76 | Evanda Sue Childers | 3 | Daughter | — | Kentucky |
| 77 | Loretta Childers | 0 | Daughter | — | Ohio |
| 78 | Jasper Siler | 31 | Head | Catcher | Kentucky |
| 79 | Carrie Siler | 27 | Wife | — | Kentucky |
| 80 | Daughter Siler | 0 | Daughter | — | Kentucky |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 3 parents
~0.92
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)