MS
Mary Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cuyahoga-County, Ohio
Our Model Tree links this Mary Smith across the 1920, 1930 and 1940 US Censuses in Cuyahoga-County, Ohio (XGBoost, ~Confirmed), with identified parents Edward & Albert — first a daughter (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cuyahoga-County, Ohio |
| Surname | Smith |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland Hgts |
| 1935 Residence (County) | Cuyahoga |
| Additional Details | |
| Occupation | Social Worker |
| Industry | City |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1000 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Social Worker |
| Township / Ward | Cleveland Hgts |
| Est. Birth Year | ~1917 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Smith | Daughter | — | 23 | ~1917 |
| Catherine Smith | Head | — | 48 | ~1892 |
| William Smith | Son | — | 25 | ~1915 |
Census Appearances
1920
Cuyahoga, Ohio
Daughter, age 3
Cuyahoga, Ohio · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Mary K |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Cuyahoga, Ohio
Daughter, age 13
Cuyahoga, Ohio · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Mary C. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Cuyahoga-County, Ohio
Daughter, age 23
Cuyahoga-County, Ohio · implied b. ~1917 — 3 household members
| Surname | Smith |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland Hgts |
| 1935 Residence (County) | Cuyahoga |
| Occupation | Social Worker |
| Industry | City |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 1000 |
| Highest Grade | C 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 Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edward Smith (~0.92 confidence) and father Albert Smith (~0.92 confidence) and mother Blanche Smith (~0.92 confidence) and mother Catherine Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edward Smith
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Albert Smith
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Blanche Smith
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Catherine Smith
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Smith
Daughter · 1940 · age 23 · b. ~1917 · Ohio
★ You are viewing this record
Sibling
William Smith
Sibling · 1940 · age 25
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 — Cuyahoga-County, Ohio
Open full size
1940 US Federal Census — Cuyahoga-County, Ohio
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03050-00315)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Betty Jane Lees | 16 | Daughter | — | Indiana |
| 42 | John Lees | 33 | Head | Owner | Pennsylvania |
| 43 | Hazel D. Lees | 31 | Wife | — | Pennsylvania |
| 44 | John Lees | 5 | Son | — | Ohio |
| 45 | Raymond Britz | 34 | Head | Owner | Ohio |
| 46 | Winola P. Britz | 44 | Wife | Partner | Ohio |
| 47 | Bernice Gilbert | 33 | Head | Stenographer | Ohio |
| 48 | Walter Hughes | 32 | Head | Partner | Pennsylvania |
| 49 | Rebecca D. Hughes | 30 | Wife | — | Pennsylvania |
| 50 | Rodger Hughes | 8 | Son | — | Pennsylvania |
| 51 | H. Brown | 24 | Head | Proprietor | Ohio |
| 52 | Helen D. Brown | 23 | Wife | — | Ohio |
| 53 | William Ross | 31 | Head | Chiropodist | New York |
| 54 | Evelyn D. Ross | 26 | Wife | — | Ohio |
| 56 | Catherine Smith | 48 | Head | — | South West Va |
| 57 | William F. Smith | 25 | Son | Credit Dept | Ohio |
| 58 | Mary C. Smith THIS PERSON | 23 | Daughter | Social Worker | Ohio |
| 59 | William Evers | 37 | Head | Engineer | Ohio |
| 60 | Corinne Evers | 37 | Wife | — | Kentucky |
| 61 | Marian Pennington | 18 | Sister-in-law | New Worker | Ohio |
| 62 | William Kamps | 43 | Head | Machinist | Ohio |
| 63 | Phyllis D. Kamps | 40 | Wife | — | Ohio |
| 64 | Eugene Kamps | 16 | Son | — | Ohio |
| 65 | Frank Bishop | 70 | Father-in-law | Sa | Ohio |
| 66 | Catherine Bishop | 67 | Mother-in-law | — | Ohio |
| 67 | Merwin Smith | 50 | Head | Salesman | Ohio |
| 68 | Fay D. Smith | 47 | Wife | Radio Salesman | Ohio |
| 69 | Abram H. Russell | 48 | Head | Radio Salesman | Ohio |
| 70 | Vera Russell | 46 | Wife | — | Canada English |
| 71 | David Russell | 6 | Son | — | Ohio |
| 72 | Ida Dagy | 76 | Head | — | Ohio |
| 73 | Thad D. Hogan | 58 | Son | Salesman | Ohio |
| 74 | Verna M. Hogan | 52 | Daughter | — | Ohio |
| 75 | Catherine Aneen | 82 | Head | — | Ohio |
| 76 | Anna Aneen | 78 | Sister | — | Ohio |
| 77 | George Aneen | 66 | Brother | — | Ohio |
| 78 | Edward Kelty | 57 | Head | Electrician | Pennsylvania |
| 79 | Anna D. Kelty | 58 | Wife | — | Ohio |
| 80 | Edward Grice | 27 | Son-in-law | Lineman | Ohio |
Pedigree Summary
Mary + 1 sibling
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)