JM
John Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hennepin-County, Minnesota
Our Model Tree links this John Martin across the 1920, 1930 and 1940 US Censuses in Hennepin-County, Minnesota (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Male
Head
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hennepin-County, Minnesota |
| Surname | Martin |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Village of Richfield |
| 1935 Residence (County) | Hennepin |
| Additional Details | |
| Occupation | truck driver |
| Industry | newspaper |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 1040 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Truck Driver |
| Township / Ward | Village Of Richfield |
| Est. Birth Year | ~1909 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Martin | Head | — | 31 | ~1909 |
| Kirk Martin | Son | — | 1 | ~1939 |
| Gladys Martin | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Hennepin, Minnesota
Son, age 11
Hennepin, Minnesota · implied b. ~1909 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | New York |
| Mother's Birthplace | Minnesota |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Hennepin, Minnesota
Son, age 22
Hennepin, Minnesota · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | New York |
| Mother's Birthplace | Minnesota |
| Occupation | Steel Worker |
| Industry | Steel Machinery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Hennepin-County, Minnesota
Head, age 31
Hennepin-County, Minnesota · implied b. ~1909 — 3 household members
| Surname | Martin |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Village of Richfield |
| 1935 Residence (County) | Hennepin |
| Occupation | truck driver |
| Industry | newspaper |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 1040 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Martin (~0.92 confidence) and father John Martin (~0.92 confidence) and mother Anna Martin (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Martin
b. ~1875
Source father
● Household
· direct · ~0.92
Father
John Martin
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Anna Martin
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Martin
Head · 1940 · age 31 · b. ~1909 · Minnesota
★ 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 — Hennepin-County, Minnesota
Open full size
1940 US Federal Census — Hennepin-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01926-00015)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emil J. Iverson | 42 | Head | Plasterer | Sweden |
| 2 | Lillian A. Iverson | 38 | Wife | — | Sweden |
| 3 | Violet E. Iverson | 18 | Daughter | — | Minnesota |
| 4 | M. Kenneth Iverson | 10 | Son | — | Minnesota |
| 5 | Raymond R. Spring | 33 | Head | Operator | North Carolina |
| 6 | Alma M. Spring | 30 | Wife | — | Minnesota |
| 7 | Rose Anna Spring | 5 | Daughter | — | Minnesota |
| 8 | Randall J. Spring | 3 | Son | — | Wisconsin |
| 9 | Reinhold F. Schwartz | 57 | Head | Laborer | Minnesota |
| 10 | Bertha M. Schwartz | 54 | Wife | — | Nebraska |
| 11 | Joseph F. O'Connell | 45 | Head | — | Wisconsin |
| 12 | Lenora K. O'Connell | 42 | Wife | — | Illinois |
| 13 | Lawrence C. Moore | 38 | Head | Order Clerk | Minnesota |
| 14 | Evelyn Moore | 38 | Wife | Waitress | Minnesota |
| 15 | John D. Martin THIS PERSON | 31 | Head | Truck Driver | North Dakota |
| 16 | Gladys G. Martin | 28 | Wife | — | Canada |
| 17 | Kirk Wayne Martin | 1 | Son | — | Minnesota |
| 18 | Jens Mundal | 58 | Head | Laborer | Norway |
| 19 | Marie Mundal | 56 | Wife | — | Norway |
| 20 | Judith Mae Mundal | 13 | Daughter | — | Minnesota |
| 21 | Clarence E. Mount | 41 | Head | Laborer | Illinois |
| 22 | Hulda C. Mount | 34 | Wife | — | Minnesota |
| 23 | Joan C. Mount | 6 | Daughter | — | Minnesota |
| 24 | Barbara J. Mount | 4 | Daughter | — | Minnesota |
| 25 | Audrey R. Mount | 1 | Daughter | — | Minnesota |
| 26 | Arthur B. Lieb | 34 | Head | Barber | Minnesota |
| 27 | Marea C. Lieb | 37 | Wife | Beautician | Nebraska |
| 28 | Ole Dale | 47 | Head | Painter | Norway |
| 29 | Clara A. Dale | 38 | Wife | — | Washington |
| 30 | Everett A. Dale | 16 | Son | — | Minnesota |
| 31 | Gordon O. Dale | 14 | Son | — | Minnesota |
| 32 | Donald J. Dale | 3 | Son | — | Minnesota |
| 33 | Robert B. Murray | 32 | Head | Laborer | Indiana |
| 34 | Velma Murray | 25 | Wife | — | South Dakota |
| 35 | Murray | None | Son | — | Minnesota |
| 36 | Emil J. Porock | 43 | Head | Radio Operator | Indiana |
| 37 | Cecelia A. Porock | 25 | Wife | — | Texas |
| 38 | Louis A. Arnold | 37 | Brother in law | Laborer | Texas |
| 39 | Levi O. Nelson | 51 | Head | Veteran | Minnesota |
| 40 | Kathryn O. Nelson | 49 | Wife | — | Free State Ireland |
Pedigree Summary
John
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)