MS
Martha Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allen-County, Ohio
Our Model Tree links this Martha Smith across the 1920, 1930 and 1940 US Censuses in Allen-County, Ohio (XGBoost, ~Confirmed), with identified parents Harry & Harry — first a daughter (b.~1915), then head of a 7-person household.
Age 25
b. ~1915
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allen-County, Ohio |
| Surname | Smith |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Lima City |
| 1935 Residence (County) | Allen |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Federal Express Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 600 |
| Highest Grade | Hs 4 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Bookkeeper |
| Township / Ward | Lima City |
| Est. Birth Year | ~1915 |
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 Martha | Age | Birth yr |
|---|---|---|---|---|
| Martha Smith | Daughter | — | 25 | ~1915 |
| Kathlyne Smith | Daughter | — | 16 | ~1924 |
| Betty Smith | Daughter | — | 13 | ~1927 |
| Rose Page | Daughter | — | 19 | ~1921 |
| Freda Smith | Head | — | 51 | ~1889 |
| Shirley Page | Other | — | 3 | ~1937 |
| Richard Smith | Son | — | 14 | ~1926 |
Census Appearances
1920
Allen, Ohio
Daughter, age 5
Allen, Ohio · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Martha |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Kansas |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Allen, Ohio
Daughter, age 16
Allen, Ohio · implied b. ~1914 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Kansas |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Allen-County, Ohio
Daughter, age 25
Allen-County, Ohio · implied b. ~1915 — 7 household members
| Surname | Smith |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Lima City |
| 1935 Residence (County) | Allen |
| Occupation | Bookkeeper |
| Industry | Federal Express Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 600 |
| Highest Grade | Hs 4 |
| 1935 Residence | Ohio |
| 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 Martha Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harry Smith (~0.92 confidence) and father Harry Smith (~0.92 confidence) and mother Freda Smith (~0.92 confidence) and mother Julia Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Smith
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Harry Smith
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Freda Smith
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Julia Smith
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Martha Smith
Daughter · 1940 · age 25 · b. ~1915 · Ohio
★ You are viewing this record
Sibling
Kathlyne Smith
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Smith
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Page
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Smith
Sibling · 1940 · age 14
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 — Allen-County, Ohio
Open full size
1940 US Federal Census — Allen-County, Ohio
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03020-00796)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anne Behrens | 32 | Wife | House Wife | Ohio |
| 42 | Freda Smith | 51 | Head | House Wife | Missouri |
| 43 | Martha Smith THIS PERSON | 25 | Daughter | Bookkeeper | Ohio |
| 44 | Rose Mary Page | 19 | Daughter | House Wife | Ohio |
| 45 | Shirley Ann Page | 3 | Grand daughter | — | Ohio |
| 46 | Kathlyne Smith | 16 | Daughter | — | Ohio |
| 47 | Richard Smith | 14 | Son | — | Ohio |
| 48 | Betty Smith | 13 | Daughter | — | Ohio |
| 49 | Lora Neuman | 45 | Head | House Wife | Ohio |
| 50 | Calvin Neuman | 16 | Son | — | Ohio |
| 51 | Frank Neuman | 14 | Son | — | Ohio |
| 52 | Charles Erito | 21 | Head | Apprentice | Ohio |
| 53 | Clara Erito | 16 | Wife | House Wife | Ohio |
| 54 | Juanita Erito | 0 | Daughter | — | Ohio |
| 55 | John Lott | 26 | Head | Rubber Worker | Ohio |
| 56 | Mary Lott | 24 | Wife | House Wife | Ohio |
| 57 | Gary Lott | 1 | Son | — | Ohio |
| 58 | Royal Downing | 29 | Head | 30 | Ohio |
| 59 | Freda Downing | 27 | Wife | House Wife | Ohio |
| 60 | David Downing | 0 | Son | — | Ohio |
| 61 | Eliza Acker | 87 | Lodger | — | Ohio |
| 62 | John Green | 30 | Lodger | Labor | Ohio |
| 63 | Louis Erb | 41 | Head | Fireman | Ohio |
| 64 | Mayme Erb | 43 | Wife | House Wife | Ohio |
| 65 | Patricia Erb | 18 | Daughter | New Worker | Ohio |
| 66 | James Mounts | 53 | Head | Brakeman | Ohio |
| 67 | Claudel Mounts | 38 | Wife | House Wife | Ohio |
| 68 | Marilyn Mounts | 9 | Daughter | — | Ohio |
| 69 | Alice Mounts | 7 | Daughter | — | Ohio |
| 70 | Charles A Morrison | 38 | Head | 72 | Pennsylvania |
| 71 | Ruth Morrison | 34 | Wife | House Wife | Ohio |
| 72 | Jean Ann Morrison | 11 | Daughter | — | Ohio |
| 73 | Betty Jane Morrison | 9 | Daughter | — | Ohio |
| 74 | Susan Irene Morrison | 8 | Daughter | — | Ohio |
| 75 | Clarence Mccown | 51 | Head | — | Tenn. |
| 76 | Bertha Mccown | 44 | Wife | Retail Electrical | Tenn. |
| 77 | William Carr | 27 | Head | Painter & Decorator | Ohio |
| 78 | Arnell Carr | 27 | Wife | House Wife | Ohio |
| 79 | Karen Carr | 3 | Daughter | — | Ohio |
Pedigree Summary
Martha + 4 siblings
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)