JL
John Lang — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Nicollet-County, Minnesota
Our Model Tree links this John Lang across the 1930 and 1940 US Censuses in Nicollet-County, Minnesota (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 8-person household.
Age 17
b. ~1923
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Nicollet-County, Minnesota |
| Surname | Lang |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | North Mankato |
| 1935 Residence (County) | Nicollet |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | North Mankato |
| Est. Birth Year | ~1923 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Lang | Daughter | — | 5 | ~1935 |
| Mildred Lang | Daughter | — | 16 | ~1924 |
| Lester Lang | Head | — | 44 | ~1896 |
| William Lang | Son | — | 12 | ~1928 |
| John Lang | Son | — | 17 | ~1923 |
| James Lang | Son | — | 8 | ~1932 |
| Thomas Lang | Son | — | 13 | ~1927 |
| Clara Lang | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Nicollet, Minnesota
Son, age 7
Nicollet, Minnesota · implied b. ~1923 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lang |
| Given Name | John L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Oregon |
| Mother's Birthplace | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Nicollet-County, Minnesota
Son, age 17
Nicollet-County, Minnesota · implied b. ~1923 — 8 household members
| Surname | Lang |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | North Mankato |
| 1935 Residence (County) | Nicollet |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Lang across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Lang
Son · 1940 · age 17 · b. ~1923 · Minnesota
★ You are viewing this record
Sibling
William Lang
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Lang
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Lang
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Lang
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Lang
Sibling · 1940 · age 8
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 — Nicollet-County, Minnesota
Open full size
1940 US Federal Census — Nicollet-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01941-00734)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Angelia Randolph, Ed | 48 | Wife | — | Minnesota |
| 42 | Ethel Randolph, Ed | 21 | Daughter | — | Minnesota |
| 43 | Harriet Randolph, Ed | 19 | Daughter | — | Minnesota |
| 44 | Peter Schmalty | 73 | Head | — | New York |
| 45 | Alice Schmalty | 62 | Wife | — | Michigan |
| 46 | Elizabeth Vallenstein | 78 | Sister | — | New York |
| 47 | Donald Heiser | 27 | Head | Gardener | Minnesota |
| 48 | Dorothy Heiser | 27 | Wife | — | Minnesota |
| 49 | Marcella Heiser | 5 | Daughter | — | Minnesota |
| 50 | Ronald Heiser | 1 | Son | — | Minnesota |
| 51 | Anna Hodapp | 77 | Head | — | Wisconsin |
| 52 | Ray Hodapp | 37 | Son | — | Minnesota |
| 53 | Lester Lang | 44 | Head | Plumber | Oregon |
| 54 | Clara Lang | 37 | Wife | — | Minnesota |
| 55 | John Lang THIS PERSON | 17 | Son | — | Minnesota |
| 56 | Mildred Lang | 16 | Daughter | — | Minnesota |
| 57 | Thomas Lang | 13 | Son | — | Minnesota |
| 58 | William Lang | 12 | Son | — | Minnesota |
| 59 | James Lang | 8 | Son | — | Minnesota |
| 60 | Mary Ann Lang | 5 | Daughter | — | Minnesota |
| 61 | John Anderson | 60 | Head | Service Man | Sweden |
| 62 | Delia Anderson | 58 | Wife | — | Sweden |
| 63 | Wilma Anderson | 17 | Daughter | — | Minnesota |
| 64 | Thomas Wilkinson | 67 | Head | Farmer | Kansas |
| 65 | Betts, Lucy Wilkinson | 77 | Housekeeper | — | New York |
| 66 | Raymond J. Marti | 37 | Head | Commercial Artist | Minnesota |
| 67 | Martha Marti | 32 | Wife | — | Minnesota |
| 68 | Joyce Marti | 10 | Daughter | — | Minnesota |
| 69 | James Marti | 9 | Son | — | Minnesota |
| 70 | Ardis Marti | 6 | Daughter | — | Minnesota |
| 71 | Gary Marti | 1 | Son | — | Minnesota |
| 72 | Laura Peterson | 58 | Mother-in-law | — | Minnesota |
| 73 | Stanley C. Kramer | 40 | Head | Salesman | Minnesota |
| 74 | Anna Kramer | 37 | Wife | Saleswoman | Minnesota |
| 75 | Donald C. Kramer | 13 | Son | — | Minnesota |
| 76 | James A. Kramer | 11 | Son | — | Minnesota |
| 77 | Clifford Oglesby | 30 | Head | Laborer | Minnesota |
| 78 | Margaret Oglesby | 24 | Wife | — | Minnesota |
| 79 | Joan Oglesby | 3 | Daughter | — | Minnesota |
| 80 | Thomas Oglesby | 2 | Son | — | Minnesota |
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)