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William Leach — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hennepin-County, Minnesota
Our Model Tree links this William Leach across the 1930 and 1940 US Censuses in Hennepin-County, Minnesota (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 5-person household.
Age 11
b. ~1929
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hennepin-County, Minnesota |
| Surname | Leach |
| Given Name | William B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Washington |
| 1935 Residence (County) | D.C. |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | D.C. |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Minneapolis City |
| Est. Birth Year | ~1929 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| William Leach | Son | — | 11 | ~1929 |
| Ruth Miller | Other | — | 32 | ~1908 |
| Anetta Leach | Spouse | — | 49 | ~1891 |
| Joan Leach | Daughter | — | 12 | ~1928 |
| George Leach | Head | — | 53 | ~1887 |
Census Appearances
1930
Hennepin, Minnesota
Son, age 1
Hennepin, Minnesota · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leach |
| Given Name | William B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Hennepin-County, Minnesota
Son, age 11
Hennepin-County, Minnesota · implied b. ~1929 — 5 household members
| Surname | Leach |
| Given Name | William B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Washington |
| 1935 Residence (County) | D.C. |
| Highest Grade | 6 |
| 1935 Residence | D.C. |
| 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 William Leach across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Leach
Son · 1940 · age 11 · b. ~1929 · Minnesota
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Sibling
Joan Leach
Sibling · 1940 · age 12
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 — 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-t0627-01978-00905)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Corrine R. Mulcahey | 53 | Wife | — | Minnesota |
| 2 | Francis R. Mulcahey | 21 | Son | — | Minnesota |
| 3 | Thomas R. Mulcahey | 13 | Son | — | Minnesota |
| 4 | Susan H. Hervera | 33 | Servant | Servant | Minnesota |
| 5 | Harry C. Jankens | 51 | Head | Branch Manager | Minnesota |
| 6 | Ruby A. Jankens | 50 | Wife | — | Minnesota |
| 7 | Alice M. Jankens | 20 | Daughter | Assistant | Minnesota |
| 8 | Clara Peterson | 26 | Servant | Servant | Minnesota |
| 9 | Pearl A. Degarmo | 65 | Head | — | Wisconsin |
| 10 | Ever K. Nielsen | 55 | Lodger | Salesman | Denmark |
| 11 | Myrtle G. Nielsen | 54 | Lodger | Sales Lady | North Dakota |
| 12 | Helen E. Blaisdell | 54 | Lodger | Teacher | Minnesota |
| 13 | Left Open For Another Lodger - Misinformed. | None | — | — | — |
| 14 | Catherine Foster | 59 | Lodger | Assistant Librarian | Pennsylvania |
| 15 | Lester Biglow | 52 | Head | Salesman | Wisconsin |
| 16 | Dorothy C. Biglow | 46 | Wife | — | Wisconsin |
| 17 | Anne C. Biglow | 9 | Daughter | — | Illinois |
| 18 | John Biglow | 5 | Son | — | Illinois |
| 19 | Pauline R. Henderson | 26 | Servant | Servant | Iowa |
| 20 | Harvey C. Mack | 57 | Head | Manager | Michigan |
| 21 | Adie H. Mack | 51 | Wife | — | Minnesota |
| 22 | Marjorie A. Mack | 22 | Daughter | Clerk | Minnesota |
| 23 | M. Margaret Norlander | 36 | Servant | Servant | Sweden |
| 24 | George E. Leach | 53 | Head | Mayor | Iowa |
| 25 | Anetta C. Leach | 49 | Wife | — | Illinois |
| 26 | Joan C. Leach | 12 | Daughter | — | Minnesota |
| 27 | William B. Leach THIS PERSON | 11 | Son | — | Minnesota |
| 28 | Ruth C. Miller | 32 | Servant | Servant | North Dakota |
| 29 | Hugh H. Barber | 46 | Head | Attorney | Minnesota |
| 30 | Gladys H. Barber | 45 | Wife | — | Connecticut |
| 31 | Frances G. Barber | 15 | Daughter | — | Minnesota |
| 32 | Barbara R. Barber | 9 | Daughter | — | Minnesota |
| 33 | Fidelia V. Imholte | 24 | Servant | Servant | Minnesota |
| 34 | William F. Mcfadden | 44 | Head | Salesman | North Dakota |
| 35 | Dorothy F. Mcfadden | 41 | Wife | — | Minnesota |
| 36 | Jane C. Mcfadden | 16 | Daughter | — | Minnesota |
| 37 | Dorothy C. Mcfadden | 13 | Daughter | — | Minnesota |
| 38 | William F. Jr. Mcfadden | 11 | Son | — | Minnesota |
| 39 | Mary L. Mcfadden | 8 | Daughter | — | Minnesota |
| 40 | Clara E. Olson | 55 | Servant | Servant | North Dakota |
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)