MC
Mary Copeland — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Wright-County, Minnesota
Our Model Tree links this Mary Copeland across the 1930 and 1940 US Censuses in Wright-County, Minnesota (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wright-County, Minnesota |
| Surname | Copeland |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Waverly Village |
| 1935 Residence (County) | Wright |
| Additional Details | |
| Highest Grade | S 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Waverly Village |
| Est. Birth Year | ~1930 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Robert Copeland | Son | — | 12 | ~1928 |
| John Copeland | Son | — | 19 | ~1921 |
| Loretta Copeland | Spouse | — | 37 | ~1903 |
| Mary Copeland | Daughter | — | 10 | ~1930 |
| John Copeland | Head | — | 67 | ~1873 |
| Frances Copeland | Daughter | — | 15 | ~1925 |
| Lillian Copeland | Daughter | — | 17 | ~1923 |
| Ann Copeland | Daughter | — | 3 | ~1937 |
Census Appearances
1930
Wright, Minnesota
Daughter, age
Wright, Minnesota · implied b. ~1930 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Copeland |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Wright-County, Minnesota
Daughter, age 10
Wright-County, Minnesota · implied b. ~1930 — 8 household members
| Surname | Copeland |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Waverly Village |
| 1935 Residence (County) | Wright |
| Highest Grade | S 4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Copeland across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Copeland
Daughter · 1940 · age 10 · b. ~1930 · Minnesota
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Sibling
Robert Copeland
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Copeland
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Copeland
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Copeland
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Copeland
Sibling · 1940 · age 19
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 — Wright-County, Minnesota
Open full size
1940 US Federal Census — Wright-County, Minnesota
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01970-00775)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward J. Zeller | 12 | Son | — | Minnesota |
| 42 | Mary J. Zeller | 10 | Daughter | — | Minnesota |
| 43 | Catherine M. Zeller | 4 | Daughter | — | Minnesota |
| 44 | Rose Marie Zeller | 2 | Daughter | — | Minnesota |
| 45 | Agnes Scott | 48 | Head | — | Ireland |
| 46 | Charles Cullen | 56 | Head | Manager Of Elevator | Minnesota |
| 47 | Anna Cullen | 54 | Wife | — | Minnesota |
| 48 | Thomas Noonan | 57 | Head | — | Eng. Canada |
| 49 | Mary Noonan | 74 | Wife | — | Minnesota |
| 50 | Edward O'Leary | 50 | Head | Manager Of Lumber Yard | So. Dakota |
| 51 | Mary O'Leary | 47 | Wife | — | So. Dakota |
| 52 | Myles O'Leary | 20 | Son | Assistant Manager | So. Dakota |
| 53 | John O'Leary | 17 | Son | Corn Picker | So. Dakota |
| 54 | Paul O'Leary | 14 | Son | — | So. Dakota |
| 55 | James O'Leary | 9 | Son | — | So. Dakota |
| 56 | Aurelia Gagnon | 42 | Head | Seamstress | Minnesota |
| 57 | Robert Gagnon | 18 | Son | Farm Helper | Minnesota |
| 58 | Lorraine Gagnon | 15 | Daughter | — | Minnesota |
| 59 | Ralph Gagnon | 10 | Son | — | Minnesota |
| 60 | Alden Gagnon | 8 | Son | — | Minnesota |
| 61 | John Copeland | 67 | Head | Labour | Ohio |
| 62 | Loretta Copeland | 37 | Wife | Maid | Minnesota |
| 63 | John J. Copeland | 19 | Son | Cook | Minnesota |
| 64 | Lillian Copeland | 17 | Daughter | Maid | Minnesota |
| 65 | Frances Copeland | 15 | Daughter | — | Minnesota |
| 66 | Robert Copeland | 12 | Son | — | Minnesota |
| 67 | Mary Copeland THIS PERSON | 10 | Daughter | — | Minnesota |
| 68 | Ann Copeland | 3 | Daughter | — | Minnesota |
| 69 | Delia Klich | 53 | Head | Custodian | Minnesota |
| 70 | Marjorie Klich | 23 | Daughter | — | Minnesota |
| 71 | Dorothy Klich | 18 | Daughter | Canning Corn | Minnesota |
| 72 | Patricia Klich | 13 | Daughter | — | Minnesota |
| 73 | Richard Tuchtenhagen | 63 | Head | Well Drilling | Germany |
| 74 | Ida Tuchtenhagen | 58 | Wife | Janitress | Minnesota |
| 75 | Elsie Tuchtenhagen | 15 | Daughter | Maid | Minnesota |
| 76 | William Tuchtenhagen | 17 | Son | — | Minnesota |
| 77 | John May | 45 | Head | Loading In Trucks | Minnesota |
| 78 | Mathilda May | 41 | Wife | Cleaning | Minnesota |
| 79 | Chester Ogle | 32 | Head | Recreation Leader | Minnesota |
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)