MC
Mary Cochran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ottawa-County, Michigan
Our Model Tree links this Mary Cochran across the 1930 and 1940 US Censuses in Ottawa-County, Michigan (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ottawa-County, Michigan |
| Surname | Cochran |
| Given Name | Mary Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Holland city |
| 1935 Residence (County) | Ottawa |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Holland City |
| Est. Birth Year | ~1928 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cochran | Daughter | — | 12 | ~1928 |
| Therese Cochran | Daughter | — | 10 | ~1930 |
| Catherine Cochran | Daughter | — | 15 | ~1925 |
| Dorothy Cochran | Daughter | — | 9 | ~1931 |
| Charles Cochran | Head | — | 38 | ~1902 |
| Charles Cochran | Son | — | 14 | ~1926 |
| William Cochran | Son | — | 7 | ~1933 |
| George Cochran | Son | — | 16 | ~1924 |
| Anne Cochran | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Ottawa, Michigan
Daughter, age 2
Ottawa, Michigan · implied b. ~1928 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cochran |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Netherlands |
| Occupation | none |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Ottawa-County, Michigan
Daughter, age 12
Ottawa-County, Michigan · implied b. ~1928 — 9 household members
| Surname | Cochran |
| Given Name | Mary Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Holland city |
| 1935 Residence (County) | Ottawa |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Cochran across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cochran
Daughter · 1940 · age 12 · b. ~1928 · Michigan
★ You are viewing this record
Sibling
Dorothy Cochran
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Cochran
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Cochran
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Cochran
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Therese Cochran
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Cochran
Sibling · 1940 · age 7
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 — Ottawa-County, Michigan
Open full size
1940 US Federal Census — Ottawa-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01808-00645)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Stella Dabrowski | 25 | Daughter | Stewardess | Michigan |
| 2 | Joe Dabrowski | 23 | Son | Assembler | Michigan |
| 3 | Helen Dabrowski | 20 | Daughter | Noveltier | Michigan |
| 4 | Edmund Dabrowski | 16 | Son | — | Michigan |
| 5 | John Nysson | 49 | Head | Finisher | Michigan |
| 6 | Clara Nysson | 37 | Wife | Sewing Mach | Michigan |
| 7 | Wilma Nysson | 15 | Daughter | — | Michigan |
| 8 | Warren Nysson | 12 | Son | — | Michigan |
| 9 | Harry Rozema | 45 | Head | Laborer | Michigan |
| 10 | Maud Rozema | 39 | Wife | — | Michigan |
| 11 | Helen Rozema | 17 | Daughter | Decorator | Michigan |
| 12 | Arnold Rozema | 13 | Son | — | Michigan |
| 13 | Wayne Rozema | 10 | Son | — | Michigan |
| 14 | Norma Rozema | 7 | Daughter | — | Michigan |
| 15 | Egbert Beekman | 53 | Head | Yard Foreman | Michigan |
| 16 | Rena Beekman | 50 | Wife | — | Michigan |
| 17 | Cornelia Beekman | 32 | Daughter | Operating Machine | Michigan |
| 18 | Bertha Beekman | 30 | Daughter | — | Michigan |
| 19 | Charles Cochran | 38 | Head | Farmhand | Michigan |
| 20 | Anne Cochran | 37 | Wife | — | Netherlands |
| 21 | George Cochran | 16 | Son | — | Wisconsin |
| 22 | Catherine Cochran | 15 | Daughter | — | Michigan |
| 23 | Charles Cochran | 14 | Son | — | Michigan |
| 24 | Mary Ann Cochran THIS PERSON | 12 | Daughter | — | Michigan |
| 25 | Therese Cochran | 10 | Daughter | — | Michigan |
| 26 | Dorothy Cochran | 9 | Daughter | — | Michigan |
| 27 | William Cochran | 7 | Son | — | Michigan |
| 28 | Gerrit Israels | 32 | Head | Plasterer | Netherlands |
| 29 | Anna Israels | 31 | Wife | — | Michigan |
| 30 | Gerrit Jr Israels | 9 | Son | — | Michigan |
| 31 | Ronald D Israels | 5 | Son | — | Michigan |
| 32 | Cornelius Israels | 42 | Head | Molder | Netherlands |
| 33 | Sena Israels | 39 | Wife | — | Michigan |
| 34 | Berdean Israels | 19 | Daughter | Manager Soda Fountain | Michigan |
| 35 | Cornelius Israels | 12 | Son | — | Michigan |
| 36 | Beverly J Israels | 5 | Daughter | — | Michigan |
| 37 | Joe Israels | 24 | Head | Plasterer | Michigan |
| 38 | Lloyd Driscoll | 24 | Head | Truck Driver | Michigan |
| 39 | Laughvan Driscoll | 23 | Wife | Saleslady | West Virginia |
| 40 | John Eding | 60 | Head | Laborer | Michigan |
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)