AJ
Alex Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Roscommon-County, Michigan
Our Model Tree links this Alex Johnson across the 1910, 1920, 1930 and 1940 US Censuses in Roscommon-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 5-person household.
Age 57
b. ~1883
Male
Head
Born: Finland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Roscommon-County, Michigan |
| Surname | Johnson |
| Given Name | Alex |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Gerrish Twp |
| 1935 Residence (County) | Roscommon |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Building Const |
| Class of Worker | OA |
| Hours Worked | 20 |
| Income (1939) | 840 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
| Occupation | Carpenter |
| Township / Ward | Gerrish Twp |
| Est. Birth Year | ~1883 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Alex | Age | Birth yr |
|---|---|---|---|---|
| Alex Johnson | Head | — | 57 | ~1883 |
| Lillian Johnson | Daughter | — | 18 | ~1922 |
| Alice Cobb | Daughter | — | 34 | ~1906 |
| Mary Johnson | Spouse | — | 50 | ~1890 |
| Charles Cobb | Other | — | 41 | ~1899 |
Census Appearances
1910
St Louis, …
Head, age 27
St Louis, Minnesota · implied b. ~1883 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alex |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Finland |
| Years Married | 2 |
| Year of Immigration | 1905 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | Painter |
| Industry | Contract |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1920
Roscommon, Michigan
Head, age 37
Roscommon, Michigan · implied b. ~1883 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alex |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Finland |
| Year of Immigration | 1900 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1930
Roscommon, Michigan
Head, age 47
Roscommon, Michigan · implied b. ~1883 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Alex |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Finland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1900 |
| Age at First Marriage | 33 |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | Carpenter |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Value / Rent | 2500 |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1940
Roscommon-County, Michigan
Head, age 57
Roscommon-County, Michigan · implied b. ~1883 — 5 household members
| Surname | Johnson |
| Given Name | Alex |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Finland |
| 1935 Residence (City) | Gerrish Twp |
| 1935 Residence (County) | Roscommon |
| Naturalization Status | Naturalized |
| Occupation | Carpenter |
| Industry | Building Const |
| Class of Worker | OA |
| Hours Worked | 20 |
| Income (1939) | 840 |
| Highest Grade | Hs 3 |
| 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 Alex Johnson across 4 US Census years (1910, 1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Alex Johnson
Head · 1940 · age 57 · b. ~1883 · 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 — Roscommon-County, Michigan
Open full size
1940 US Federal Census — Roscommon-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01810-00394)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edwin L. Anderson | 19 | Son | Truck Driver | Michigan |
| 2 | Albert T. Anderson | 16 | Son | — | Michigan |
| 3 | Clifford K. Anderson | 14 | Son | — | Michigan |
| 4 | Alphonse Liderman | 36 | Head | Truck Driver | Michigan |
| 5 | Esther Liderman | 33 | Wife | — | Michigan |
| 6 | Dorothy E. Liderman | 15 | Daughter | — | Michigan |
| 7 | Betty M. Liderman | 12 | Daughter | — | Michigan |
| 8 | Helen J. Liderman | 9 | Daughter | — | Michigan |
| 9 | Janett M. Liderman | 2 | Daughter | — | Michigan |
| 10 | Elof A. Soderholm | 56 | Head | Contractor | Sweden |
| 11 | Xir Soderholm | 60 | Wife | — | Sweden |
| 12 | Elmer Soderholm | 32 | Son | Station Attendant | Sweden |
| 13 | Lenard Soderholm | 23 | Son | Laborer | Illinois |
| 14 | Ella Soderholm | 22 | Daughter | Clerk | Illinois |
| 15 | Pearl Soderholm | 17 | Daughter | Apprentice | Michigan |
| 16 | Emma Martinson | 61 | Head | House Cleaner | Finland |
| 17 | Eelia Martinson | 29 | Son | Clerk | Michigan |
| 18 | Jonas Carlson | 65 | Head | Farmer | Finland |
| 19 | Elmer Carlson | 29 | Son | Mail Carrier | Michigan |
| 20 | Fred Liderman | 60 | Head | Farmer | Finland |
| 21 | Ida Liderman | 57 | Wife | House Keeper | Finland |
| 22 | Everett Liderman | 21 | Son | Recreation Leader | Michigan |
| 23 | William Johnson | 28 | Head | Mail Carrier | Michigan |
| 24 | Christina Johnson | 40 | Wife | — | Michigan |
| 25 | William Cobb | 73 | Father in law | — | New York |
| 26 | Mary E. Cobb | 64 | Mother in law | — | Michigan |
| 27 | Alex Johnson THIS PERSON | 57 | Head | Carpenter | Finland |
| 28 | Mary S. Johnson | 50 | Wife | — | Michigan |
| 29 | Lillian Johnson | 18 | Daughter | Secretary | Michigan |
| 30 | Charles Cobb | 41 | Son in law | Salesman | Michigan |
| 31 | Alice Cobb | 34 | Daughter | — | Michigan |
| 32 | Axel Erickson | 57 | Head | Laborer | Sweden |
| 33 | Bernard Rosquist | 24 | Head | Laborer | Illinois |
| 34 | Ethyl L. Rosquist | 21 | Wife | — | Michigan |
| 35 | Bernadye Rosquist | 1 | Daughter | — | Michigan |
| 36 | Max Slew | 37 | Head | Tinsmith | Michigan |
| 37 | Florence Slew | 35 | Wife | — | Michigan |
| 38 | William J. Eddy | 47 | Head | Salesman | Michigan |
| 39 | Edna Margaret Eddy | 47 | Wife | — | Michigan |
| 40 | Robert A. Thompson | 36 | Head | Field Man | 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)