MJ
Mary Jackson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allen-County, Ohio
Our Model Tree links this Mary Jackson across the 1920, 1930 and 1940 US Censuses in Allen-County, Ohio (XGBoost, ~Confirmed), with identified parents John & Bertha — first a daughter (b.~1913), then head of a 2-person household.
Age 27
b. ~1913
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allen-County, Ohio |
| Surname | Jackson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Lima |
| 1935 Residence (County) | Allen |
| Additional Details | |
| Occupation | Stockkeeper |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 520 |
| Highest Grade | H-2 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Stockkeeper |
| Township / Ward | Lima |
| Est. Birth Year | ~1913 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Jackson | Daughter | — | 27 | ~1913 |
| Bertha Jackson | Head | — | 62 | ~1878 |
Census Appearances
1920
Allen, Ohio
Daughter, age 7
Allen, Ohio · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Mulatto |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | New York |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Allen, Ohio
Daughter, age 17
Allen, Ohio · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Allen-County, Ohio
Daughter, age 27
Allen-County, Ohio · implied b. ~1913 — 2 household members
| Surname | Jackson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Lima |
| 1935 Residence (County) | Allen |
| Occupation | Stockkeeper |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 520 |
| Highest Grade | H-2 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Jackson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Jackson (~0.92 confidence) and mother Bertha Jackson (~0.92 confidence) and mother Byrdia Jackson (~0.92 confidence) and mother Bertha Jackson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Jackson
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Bertha Jackson
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Byrdia Jackson
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Bertha Jackson
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Jackson
Daughter · 1940 · age 27 · b. ~1913 · Ohio
★ 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 — Allen-County, Ohio
Open full size
1940 US Federal Census — Allen-County, Ohio
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-03021-00366)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lester Simmons | 45 | Head | Laborer | Ohio |
| 42 | Gertrude Simmons | 35 | Wife | Housekeeper | Kentucky |
| 43 | Dean Ann Simmons | 1 | Daughter | — | Ohio |
| 44 | Bertha Jackson | 62 | Head | Clerk | Indiana |
| 45 | Mary Jackson THIS PERSON | 27 | Daughter | Stockkeeper | Indiana |
| 46 | Raymond Bobson | 40 | Head | Porter | Ohio |
| 47 | Flossie Bobson | 36 | Wife | — | Ohio |
| 48 | Catherine Bobson | 17 | Daughter | — | Ohio |
| 49 | Raymond Jr Bobson | 14 | Son | — | Ohio |
| 50 | John Herron | 67 | Father-in-law | — | Ohio |
| 51 | Thomas A Bell | 48 | Head | Masonry | Georgia |
| 52 | Alfred Bell | 19 | Son | Porter | Michigan |
| 53 | Carrie Bell | 16 | Daughter | Housekeeper | Michigan |
| 54 | Elizabeth Bell | 14 | Daughter | — | Michigan |
| 55 | Edward Watts | 30 | Head | Laborer | Mississippi |
| 56 | Venonia Watts | 23 | Daughter | Housework | Georgia |
| 57 | Joseph Wadruff | 20 | Brother-in-law | Laborer | Georgia |
| 58 | Linnie Richardson | 66 | Head | — | Ohio |
| 59 | Bertha Patterson | 50 | Daughter | Housework | Ohio |
| 60 | Stewart Ranson | 24 | Son-in-law | Instructor | New York |
| 61 | Lois Ranson | 19 | Daughter | — | Ohio |
| 62 | Nellie Jones | 23 | Head | — | Ohio |
| 63 | Cornelius Simms | 5 | Son | Laborer | Ohio |
| 64 | Hazel Simms | 2 | Daughter | — | Ohio |
| 65 | Otto Newcomer | 50 | Head | Laborer | Ohio |
| 66 | H. G. Newcomer | 45 | Mother | Laborer | Ohio |
| 67 | Lucille Newcomer | 42 | Sister-in-law | — | Ohio |
| 68 | Martha Newcomer | 5 | Niece | — | Ohio |
| 69 | Reva Newcomer | 5 | Niece | — | Ohio |
| 70 | Cass Wilson | 46 | Head | Foreman | Ohio |
| 71 | Nenuta Wilson | 42 | Wife | — | Ohio |
| 72 | Floy Wilson | 16 | Daughter | — | Ohio |
| 73 | Jack Wilson | 4 | Son | — | Ohio |
| 74 | Lena Wilson | 65 | Mother | — | Ohio |
| 75 | Ernest Guenther | 46 | Head | Laborer | Ohio |
| 76 | Ruth B Guenther | 45 | Wife | — | Penna |
| 77 | Ruth N Guenther | 6 | Daughter | — | Ohio |
| 78 | Jacob Guenther | 82 | Father | — | Switzerland |
Pedigree Summary
Mary
Gen 1 · 4 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)