MP
Mary Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Iron-County, Michigan
Our Model Tree links this Mary Peterson across the 1920, 1930 and 1940 US Censuses in Iron-County, Michigan (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 6-person household.
Age 46
b. ~1894
Female
Spouse
Born: Finland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Iron-County, Michigan |
| Surname | Peterson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Iron River City |
| 1935 Residence (County) | Iron |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
| Township / Ward | Iron River City |
| Est. Birth Year | ~1894 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ethel Peterson | Daughter | — | 23 | ~1917 |
| Lily Peterson | Daughter | — | 22 | ~1918 |
| Peter Peterson | Head | — | 56 | ~1884 |
| Clifford Peterson | Son | — | 24 | ~1916 |
| Elizabeth Peterson | Son | — | 26 | ~1914 |
| Mary Peterson | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Iron, Michigan
Spouse, age 25
Iron, Michigan · implied b. ~1895 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Finland |
| Year of Immigration | 1911 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1930
Iron, Michigan
Spouse, age 36
Iron, Michigan · implied b. ~1894 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Finland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1911 |
| Age at First Marriage | 19 |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | Finnish |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1940
Iron-County, Michigan
Spouse, age 46
Iron-County, Michigan · implied b. ~1894 — 6 household members
| Surname | Peterson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Iron River City |
| 1935 Residence (County) | Iron |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
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 Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Peterson
Spouse · 1940 · age 46 · b. ~1894 · Michigan
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Iron-County, Michigan
Open full size
1940 US Federal Census — Iron-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01765-00565)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | H. Clarence Schacker | 53 | Head | Engineer | Michigan |
| 42 | Effie S. Schacker | 54 | Wife | — | Michigan |
| 43 | John Dojo | 43 | Lodger | Editor | Michigan |
| 44 | Margaret Rehe | 58 | Head | Seamstress | Michigan |
| 45 | Lydia Saunders | 36 | Head | Mechanic | Tennessee |
| 46 | Manuel Krone | 25 | Head | Trucker For Oil Company | Michigan |
| 47 | Annie Krone | 54 | Wife | — | Michigan |
| 48 | Verna Krone | 26 | Daughter | Nurse | Michigan |
| 49 | Muriel Krone | 21 | Daughter | Stenographer | Michigan |
| 50 | John Krone | 24 | Lodger | Buttermaker | Wisconsin |
| 51 | David Krone | 50 | Head | Auto Mechanic | Michigan |
| 52 | Selma Krone | 50 | Wife | — | Sweden |
| 53 | Henry Krone | 20 | Son | Clerk | Michigan |
| 54 | Marley Krone | 15 | Daughter | — | Michigan |
| 55 | Albert Clusty | 68 | Head | Labor | Michigan |
| 56 | Berta Clusty | 66 | Wife | — | Michigan |
| 57 | Arnold Clusty | 25 | Son | Butcher | Michigan |
| 58 | Milford Clusty | 14 | Son | — | Michigan |
| 59 | Richard Clusty | 15 | Son | — | Michigan |
| 60 | Doris Clusty | 7 | Daughter | — | Michigan |
| 61 | Emeryda Dahlberg | 70 | Mother | — | Sweden |
| 62 | Arthur Corf | 55 | Lodger | Miner | England |
| 63 | Oscar Carlson | 50 | Lodger | Miner | Sweden |
| 64 | Clarence Dalma | 30 | Head | Clerk | Wisconsin |
| 65 | Edith Dalma | 27 | Wife | — | Michigan |
| 66 | Ronald Dalma | 8 | Son | — | Michigan |
| 67 | Leo Q. Lundberg | 27 | Head | Trucker | Michigan |
| 68 | Gladys Lundberg | 22 | Wife | — | Michigan |
| 69 | Jerry Lundberg | 4 | Son | — | Michigan |
| 70 | Gene Lundberg | 1 | Son | — | Michigan |
| 71 | Peter Peterson | 56 | Head | Labor | Wisconsin |
| 72 | Mary Peterson THIS PERSON | 46 | Wife | — | Finland |
| 73 | Elizabeth Peterson | 26 | Son | — | Michigan |
| 74 | Clifford Peterson | 24 | Son | Trucker | Michigan |
| 75 | Ethel G. Peterson | 23 | Daughter | — | Michigan |
| 76 | Lily E. Peterson | 22 | Daughter | Labor | Michigan |
| 77 | Josephine Levendoski | 37 | Head | Bookkeeper | Michigan |
| 78 | Josephine Levendoski | 67 | Mother | — | Poland |
| 79 | Walter Randall | 47 | Head | Garage Manager | Michigan |
| 80 | Elna Randall | 40 | Wife | — | 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)