JG
John Gustafson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mason-County, Michigan
Our Model Tree links this John Gustafson across the 1920, 1930 and 1940 US Censuses in Mason-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 4-person household.
Age 66
b. ~1874
Male
Head
Born: Finland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mason-County, Michigan |
| Surname | Gustafson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Ludington |
| 1935 Residence (County) | Mason |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 1935 Residence | Michigan |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
| Township / Ward | Ludington |
| Est. Birth Year | ~1874 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Gustafson | Head | — | 66 | ~1874 |
| George Gustafson | Son | — | 28 | ~1912 |
| Olga Gustafson | Spouse | — | 56 | ~1884 |
| Geraline Gustafson | Daughter | — | 20 | ~1920 |
Census Appearances
1920
Clatsop, Oregon
Head, age 46
Clatsop, Oregon · implied b. ~1874 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gustafson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Finland |
| Year of Immigration | 1892 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | Farmer |
| Industry | General |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Finnish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Finland |
| Year of Naturalization | 1916 |
| Birthplace (normalized) | finland |
1930
Mason, Michigan
Head, age 55
Mason, Michigan · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gustafson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Finland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1891 |
| Age at First Marriage | 27 |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | Longshoreman |
| Industry | Railroad Yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Finnish |
| Home Owned/Rented | O |
| Home Value / Rent | 2200 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1940
Mason-County, Michigan
Head, age 66
Mason-County, Michigan · implied b. ~1874 — 4 household members
| Surname | Gustafson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Ludington |
| 1935 Residence (County) | Mason |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 1935 Residence | Michigan |
| 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 John Gustafson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
John Gustafson
Head · 1940 · age 66 · b. ~1874 · Michigan
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Mason-County, Michigan
Open full size
1940 US Federal Census — Mason-County, Michigan
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01788-00177)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Josephine Shilling | 23 | Wife | Housewife | Michigan |
| 42 | Joan Shilling | 2 | Daughter | — | Michigan |
| 43 | Lee Shilling | 0 | Son | — | Michigan |
| 44 | Gust Sundholm | 65 | Head | Retired | Finland |
| 45 | Mathilda Sundholm | 61 | Wife | Housewife | Finland |
| 46 | Dorothy Sundholm | 26 | Daughter | Office Stenographer | Michigan |
| 47 | Martin Sundholm | 24 | Son | Driver - Salesman | Michigan |
| 48 | Russell Miller | 23 | Head | Bar Keeper | Michigan |
| 49 | Betty Miller | 21 | Wife | Housewife | Michigan |
| 50 | Russell Jr. Miller | 1 | Son | — | Michigan |
| 51 | Ruth Holmstrom | 40 | Wife | Housewife | Michigan |
| 52 | Iris Holmstrom | 17 | Daughter | — | Michigan |
| 53 | Robert Holmstrom | 15 | Son | Bell Hop | Michigan |
| 54 | James Holmstrom | 10 | Son | — | Michigan |
| 55 | Marie Holmstrom | 81 | Mother | — | Finland |
| 56 | J. W. Crawford | 35 | Head | Embalmer | Michigan |
| 57 | Olga Crawford | 36 | Wife | Housewife | Michigan |
| 58 | Gary Crawford | 10 | Son | — | Michigan |
| 59 | Susan Crawford | 4 | Daughter | — | Michigan |
| 60 | Alfred Johnson | 64 | Head | — | Michigan |
| 61 | Hedge Johnson | 62 | Wife | Housewife | Michigan |
| 62 | Clara Greenwell | 42 | Lodger | Telephone Operator | Michigan |
| 63 | Kyle Skyfield | 80 | Head | Boarder | Michigan |
| 64 | Will Johnson | 88 | Head | Tourist & Resort | Sweden |
| 65 | Kate Johnson | 66 | Wife | Housewife | Wisconsin |
| 66 | Louis Wilkins | 64 | Head | Florist | Illinois |
| 67 | Benjamin Beaudreau | 63 | Head | Mail Carrier | Wisconsin |
| 68 | Marie Beaudreau | 59 | Wife | Housewife | Michigan |
| 69 | Frank Nielsen | 27 | Lodger | Laborer - Hwy Dept | Michigan |
| 70 | John Gustafson THIS PERSON | 66 | Head | — | Finland |
| 71 | Olga Gustafson | 56 | Wife | Housewife | Michigan |
| 72 | George Gustafson | 28 | Son | Draftsman | Michigan |
| 73 | Geraline Gustafson | 20 | Daughter | Office Clerk | Michigan |
| 74 | George Katzman | 48 | Head | Physician | Poland |
| 75 | Sophia Katzman | 40 | Wife | Housewife | Poland |
| 76 | George Pomeroy | 56 | Head | Laborer | Michigan |
| 77 | Ethel Pomeroy | 55 | Wife | Housewife | Michigan |
| 78 | Paul Pomeroy | 34 | Son | Real Property | Michigan |
| 79 | Jane Pomeroy | 22 | Daughter | Receptionist | 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)