MC
Martha Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Ohio
Our Model Tree links this Martha Clark across the 1930 and 1940 US Censuses in Montgomery-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 14-person household.
Age 16
b. ~1924
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Ohio |
| Surname | Clark |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Dayton |
| Est. Birth Year | ~1924 |
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.
14 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Frances Clark | Daughter | — | 13 | ~1927 |
| Betsy Clark | Daughter | — | 10 | ~1930 |
| Martha Clark | Daughter | — | 16 | ~1924 |
| Dorothy Clark | Daughter | — | ~1940 | |
| Mildred Clark | Daughter | — | 5 | ~1935 |
| Doris Clark | Daughter | — | 11 | ~1929 |
| Marguerite King | Daughter | — | 19 | ~1921 |
| Beulah Clark | Daughter | — | 8 | ~1932 |
| William Clark | Head | — | 56 | ~1884 |
| Charles King | Other | — | ~1940 | |
| Charles King | Other | — | 22 | ~1918 |
| Leroy Clark | Son | — | 14 | ~1926 |
| John Clark | Son | — | 3 | ~1937 |
| Emma Clark | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Montgomery, Ohio
Daughter, age 6
Montgomery, Ohio · implied b. ~1924 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| 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
Montgomery-County, Ohio
Daughter, age 16
Montgomery-County, Ohio · implied b. ~1924 — 14 household members
| Surname | Clark |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton |
| 1935 Residence (County) | Montgomery |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| 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 Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha Clark
Daughter · 1940 · age 16 · b. ~1924 · Ohio
★ You are viewing this record
Sibling
Leroy Clark
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Clark
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marguerite King
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Clark
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Clark
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Clark
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beulah Clark
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Clark
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betsy Clark
Sibling · 1940 · age 10
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 — Montgomery-County, Ohio
Open full size
1940 US Federal Census — Montgomery-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03256-00855)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dorothy Sidenstick | 26 | Wife | — | Ohio |
| 2 | Betty Sidenstick | 9 | Daughter | — | Ohio |
| 3 | Albert Sidenstick | 7 | Son | — | Ohio |
| 4 | Doris Sidenstick | 1 | Daughter | — | Ohio |
| 5 | Georgie Warren | 58 | Head | Maid | W. Virginia |
| 6 | William Martin | 40 | Lodger | Laborer | W. Virginia |
| 7 | William Fogarty | 70 | Lodger | — | Ohio |
| 8 | Patrick Solerky | Solesky | 61 | Lodger | Laborer | Michigan |
| 9 | John Esposito | 55 | Head | Laborer | Italy |
| 10 | Rose Esposito | 54 | Wife | — | Italy |
| 11 | Anthony Esposito | 24 | Son | Janitor | Italy |
| 12 | Victoria Esposito | 25 | Daughter | Waitress | Ohio |
| 13 | Frank Esposito | 20 | Son | — | Ohio |
| 14 | Nicholas Esposito | 15 | Son | — | Ohio |
| 15 | Galla Van Winkle | 27 | Head | Core Assembler | Kentucky |
| 16 | Eva Van Winkle | 24 | Wife | — | Oklahoma |
| 17 | Albert Van Winkle | 2 | Son | — | Ohio |
| 18 | Mary Ellen Van Winkle | 0 | Daughter | — | Ohio |
| 19 | Benson Van Winkle | 24 | Brother | Laborer | Kentucky |
| 20 | John Frizell | 35 | Head | Assembler | Ohio |
| 21 | Ruth Frizell | 22 | Wife | — | Ohio |
| 22 | John Jr. Frizell | 1 | Son | — | Ohio |
| 23 | William Clark | 56 | Head | Lineman | Nebraska |
| 24 | Emma Clark | 40 | Wife | — | Ohio |
| 25 | Martha Clark THIS PERSON | 16 | Daughter | — | Ohio |
| 26 | Leroy Clark | 14 | Son | — | Ohio |
| 27 | Frances Clark | 13 | Daughter | — | Ohio |
| 28 | Doris Clark | 11 | Daughter | — | Ohio |
| 29 | Betsy Ann Clark | 10 | Daughter | — | Ohio |
| 30 | Beulah Clark | 8 | Daughter | — | Ohio |
| 31 | Mildred Clark | 5 | Daughter | — | Ohio |
| 32 | John Clark | 3 | Son | — | Ohio |
| 33 | Dorothy Clark | 0 | Daughter | — | Ohio |
| 34 | Charles King | 22 | Son-in-law | Truck Helper | Ohio |
| 35 | Marguerite King | 19 | Daughter | — | Ohio |
| 36 | Charles Jr. King | 0 | Grandson | — | Ohio |
| 37 | Frederick Moeller | 59 | Head | Millwright | Ohio |
| 38 | Eva May Moeller | 36 | Wife | — | Ohio |
| 39 | Lena West | 61 | Head | — | Ohio |
| 40 | Daughter West | 28 | Daughter | Clerk | Ohio |
Related Census Records
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)