JP
James Peterson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marquette-County, Michigan
Our Model Tree links this James Peterson across the 1930 and 1940 US Censuses in Marquette-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 11-person household.
Age 12
b. ~1928
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marquette-County, Michigan |
| Surname | Peterson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Village |
| 1935 Residence (County) | Marquette |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same Place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Village |
| 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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Joan Peterson | Daughter | — | 4 | ~1936 |
| Gail Peterson | Daughter | — | 1 | ~1939 |
| Marie Peterson | Daughter | — | 18 | ~1922 |
| Harold Peterson | Head | — | 49 | ~1891 |
| Harold Peterson | Son | — | 13 | ~1927 |
| Robert Peterson | Son | — | 8 | ~1932 |
| Roy Peterson | Son | — | 6 | ~1934 |
| James Peterson | Son | — | 12 | ~1928 |
| Kenneth Peterson | Son | — | 15 | ~1925 |
| Jack Peterson | Son | — | 9 | ~1931 |
| Iney Peterson | Spouse | — | 33 | ~1907 |
Census Appearances
1930
Marquette, Michigan
Son, age 2
Marquette, Michigan · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Marquette-County, Michigan
Son, age 12
Marquette-County, Michigan · implied b. ~1928 — 11 household members
| Surname | Peterson |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Village |
| 1935 Residence (County) | Marquette |
| 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 James Peterson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Peterson
Son · 1940 · age 12 · b. ~1928 · Michigan
★ You are viewing this record
Sibling
Roy Peterson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Peterson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Peterson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Peterson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Peterson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gail Peterson
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Peterson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Peterson
Sibling · 1940 · age 4
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 — Marquette-County, Michigan
Open full size
1940 US Federal Census — Marquette-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01787-00522)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Johnson | 46 | Head | Farmer | Michigan |
| 42 | Arlene Johnson | 18 | Daughter | — | Michigan |
| 43 | Minnie Jonofski | 54 | Head | — | Michigan |
| 44 | Ralph Jonofski | 25 | Son | Farm Help | Michigan |
| 45 | Robert Jonofski | 24 | Son | Farm Help | Michigan |
| 46 | Mable Jonofski | 21 | Daughter | — | Michigan |
| 47 | Edward Francis | 39 | Head | Farmer | Michigan |
| 48 | Ellen Francis | 37 | Wife | — | Michigan |
| 49 | Elaine Francis | 13 | Daughter | — | Michigan |
| 50 | Eleanor Francis | 10 | Daughter | — | Michigan |
| 51 | Oscar Laava | 57 | Head | Farmer | Finland |
| 52 | Hilma Laava | 52 | Wife | — | Finland |
| 53 | Ahti Laava | 27 | Son | Farm Help | Michigan |
| 54 | Elma Laava | 18 | Daughter | — | Michigan |
| 55 | Lembi Laava | 16 | Daughter | — | Michigan |
| 56 | Ernest Johnson | 55 | Head | Farmer | Michigan |
| 57 | Julia Johnson | 79 | Mother | — | Sweden |
| 58 | Edward Mactilo | 53 | Head | Farmer | Finland |
| 59 | Jennie Mactilo | 48 | Wife | — | Michigan |
| 60 | William Mactilo | 26 | Son | Farm Help | Michigan |
| 61 | Ilmari Mactilo | 22 | Son | School Bus Driver | Michigan |
| 62 | Harold Peterson | 49 | Head | Laborer | Michigan |
| 63 | Iney Peterson | 33 | Wife | — | Michigan |
| 64 | Marie Peterson | 18 | Daughter | Sales Lady | Michigan |
| 65 | Kenneth Peterson | 15 | Son | New Worker | Minnesota |
| 66 | Harold Peterson | 13 | Son | — | Michigan |
| 67 | James Peterson THIS PERSON | 12 | Son | — | Michigan |
| 68 | Jack Peterson | 9 | Son | — | Michigan |
| 69 | Robert Peterson | 8 | Son | — | Michigan |
| 70 | Roy Peterson | 6 | Son | — | Michigan |
| 71 | Joan Peterson | 4 | Daughter | — | Michigan |
| 72 | Gail Peterson | 1 | Daughter | — | Michigan |
| 73 | Frank Kumpula | 48 | Head | Laborer | Minnesota |
| 74 | Hilda Kumpula | 40 | Wife | — | Massachusetts |
| 75 | Reino Kumpula | 22 | Son | Loader | Michigan |
| 76 | Elaine Kumpula | 13 | Daughter | — | Michigan |
| 77 | Adele Kumpula | 7 | Daughter | — | Michigan |
| 78 | Marlene Kumpula | 1 | Daughter | — | Michigan |
| 79 | Albert Pucklow | 42 | Head | Laborer | Michigan |
| 80 | Doris Pucklow | 44 | 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)