ML
Mildred Lee — 1940 US Census Record
Model Tree available1940 United States Federal Census · Swift-County, Minnesota
Our Model Tree links this Mildred Lee across the 1920, 1930 and 1940 US Censuses in Swift-County, Minnesota (XGBoost, ~Confirmed), with identified parents Clarence & Theodore — first a daughter (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Swift-County, Minnesota |
| Surname | Lee |
| Given Name | Mildred H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Benson City |
| 1935 Residence (County) | Swift |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Cooperative Creamery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 720 |
| Highest Grade | C-4 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Bookkeeper |
| Township / Ward | Benson City |
| Est. Birth Year | ~1912 |
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 Mildred | Age | Birth yr |
|---|---|---|---|---|
| Dalia Lee | Daughter | — | 41 | ~1899 |
| Theodore Lee | Head | — | 78 | ~1862 |
| Dena Lee | Spouse | — | 71 | ~1869 |
| Mildred Lee | Daughter | — | 28 | ~1912 |
Census Appearances
1920
Swift, Minnesota
Daughter, age 8
Swift, Minnesota · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lee |
| Given Name | Mildred H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Swift, Minnesota
Daughter, age 18
Swift, Minnesota · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lee |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Swift-County, Minnesota
Daughter, age 28
Swift-County, Minnesota · implied b. ~1912 — 4 household members
| Surname | Lee |
| Given Name | Mildred H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Benson City |
| 1935 Residence (County) | Swift |
| Occupation | Bookkeeper |
| Industry | Cooperative Creamery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 720 |
| Highest Grade | C-4 |
| 1935 Residence | Same House |
| 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 Mildred Lee across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Clarence Lee (~0.92 confidence) and father Theodore Lee (~0.92 confidence) and father Thos Lee (~0.92 confidence) and mother Dena Lee (~0.92 confidence) and mother Dina Lee (~0.92 confidence) and mother Sina Lee (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Clarence Lee
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Theodore Lee
b. ~1862
Source father
● Household
· direct · ~0.92
Father
Thos Lee
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Dena Lee
b. ~1869
Source mother
● Household
· direct · ~0.92
Mother
Dina Lee
b. ~1869
Source mother
● Household
· direct · ~0.92
Mother
Sina Lee
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mildred Lee
Daughter · 1940 · age 28 · b. ~1912 · Minnesota
★ You are viewing this record
Sibling
Dalia Lee
Sibling · 1940 · age 41
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 — Swift-County, Minnesota
Open full size
1940 US Federal Census — Swift-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01963-00076)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William G. Maass | 53 | Head | Laborer, Road Construction | Wisconsin |
| 42 | Julia R. Maass | 50 | Wife | — | Minnesota |
| 43 | Albert L. Maass | 18 | Son | Laborer | Minnesota |
| 44 | Margaret J. Maass | 16 | Daughter | — | Minnesota |
| 45 | William G. Maass | 14 | Son | — | Minnesota |
| 46 | Herman A. Maass | 12 | Son | — | Minnesota |
| 47 | Theodore A. Lee | 78 | Head | — | Wisconsin |
| 48 | Dena H. Lee | 71 | Wife | — | Wisconsin |
| 49 | Dalia T. Lee | 41 | Daughter | — | Minnesota |
| 50 | Mildred H. Lee THIS PERSON | 28 | Daughter | Bookkeeper | Minnesota |
| 51 | George C. Minikus | 43 | Head | Commodity Foreman | Minnesota |
| 52 | Frances E. Minikus | 36 | Wife | — | Wisconsin |
| 53 | Margaret F. Minikus | 1 | Daughter | — | Minnesota |
| 54 | Joseph S. Murphy | 54 | Lodger | Investigator | Minnesota |
| 55 | Ole A. Lore | 52 | Lodger | Manager Dept Grocery Store | Minnesota |
| 56 | John Mcquaid | 52 | Lodger | Operator | Minnesota |
| 57 | Walter J. Reimer | 34 | Head | Carpenter | Iowa |
| 58 | Venla J. Reimer | 32 | Wife | — | Minnesota |
| 59 | Ward S. Reimer | 7 | Son | — | Minnesota |
| 60 | Janet V. Reimer | 5 | Daughter | — | Minnesota |
| 61 | Frank L. Bank | 40 | Head | Manager Operator | Iowa |
| 62 | Loretta E. Bank | 34 | Wife | Operator | Minnesota |
| 63 | Andrew Olson | 59 | Head | Manager | Norway |
| 64 | Almah Olson | 53 | Wife | — | Minnesota |
| 65 | Elizabeth Swanson | 22 | Lodger | Student Nurse | North Dakota |
| 66 | Milo L. Ladd | 48 | Head | Operator | Minnesota |
| 67 | Helen A. Ladd | 46 | Wife | Assistant Manager | Minnesota |
| 68 | Frederick W. Schmidt | 46 | Head | Operator | Minnesota |
| 69 | Ann G. Schmidt | 46 | Wife | Manager | Scotland |
| 70 | W. David Schmidt | 16 | Son | — | Canada |
| 71 | Helen E. Schmidt | 15 | Daughter | — | Canada |
| 72 | Christ Hanson | 61 | Lodger | Operator | Denmark |
| 73 | A. Michalscheck | 29 | Lodger | Cook | Minnesota |
| 74 | Knute J. Rodberg | 58 | Head | District Court | Norway |
| 75 | Tillie P. Rodberg | 46 | Wife | — | Minnesota |
| 76 | Peter Berge | 74 | Father-in-law | — | Norway |
| 77 | Ivy F. Nelson | 66 | Head | — | Indiana |
| 78 | Larson Peter J. Nelson | 82 | Head | — | Norway |
| 79 | Otto H. Lee | 61 | Head | Laborer | Minnesota |
| 80 | Matilda A. Lee | 53 | Wife | — | Minnesota |
Pedigree Summary
Mildred + 1 sibling
Gen 1 · 6 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)