WM
William Mann — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lee-County, Iowa
Our Model Tree links this William Mann across the 1930 and 1940 US Censuses in Lee-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lee-County, Iowa |
| Surname | Mann |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Jackson twp |
| 1935 Residence (County) | Lee |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Jackson Twp |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Alvena Mann | Daughter | — | 10 | ~1930 |
| Glenda Mann | Daughter | — | 1 | ~1939 |
| Pansy Mann | Spouse | — | 30 | ~1910 |
| Jackie Mann | Son | — | 2 | ~1938 |
| William Mann | Son | — | 11 | ~1929 |
| Brenda Mann | Daughter | — | 1 | ~1939 |
| Caroline Mann | Daughter | — | 6 | ~1934 |
| Delores Mann | Daughter | — | 9 | ~1931 |
| Horace Mann | Head | — | 34 | ~1906 |
Census Appearances
1930
Clark, Missouri
Son, age 1
Clark, Missouri · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mann |
| Given Name | William F. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Lee-County, Iowa
Son, age 11
Lee-County, Iowa · implied b. ~1929 — 9 household members
| Surname | Mann |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Jackson twp |
| 1935 Residence (County) | Lee |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Mann across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mann
Son · 1940 · age 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Brenda Mann
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Delores Mann
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jackie Mann
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glenda Mann
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Caroline Mann
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alvena Mann
Sibling · 1940 · age 10
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 — Lee-County, Iowa
Open full size
1940 US Federal Census — Lee-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01174-00161)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Long | 56 | Head | Farmer | Iowa |
| 2 | Grace Long | 57 | Wife | — | Iowa |
| 3 | Wesley Long | 30 | Son-in-law | Molder | Illinois |
| 4 | Evaline Long | 30 | Daughter | — | Iowa |
| 5 | Paul Long | 9 | Grandson | — | Iowa |
| 6 | Phillip Long | 8 | Grandson | — | Iowa |
| 7 | Joseph Long | 7 | Grandson | — | Iowa |
| 8 | Robert Long | 6 | Grandson | — | Illinois |
| 9 | Esther Long | 4 | Granddaughter | — | Illinois |
| 10 | Albert Long | 2 | Grandson | — | Illinois |
| 11 | David Long | 1 | Grandson | — | Iowa |
| 12 | Elmer Warner | 49 | Head | Farmer | Illinois |
| 13 | Ethel Warner | 46 | Wife | — | Iowa |
| 14 | Paul Warner | 21 | Son | Laborer | Iowa |
| 15 | John Warner | 19 | Son | — | Iowa |
| 16 | Eunice Warner | 12 | Daughter | — | Iowa |
| 17 | Lois Warner | 10 | Daughter | — | Iowa |
| 18 | Marcus Warner | 8 | Son | — | Iowa |
| 19 | Mary Stevens | 83 | Mother-in-law | — | Iowa |
| 20 | Horace Mann | 34 | Head | Truck Driver | Iowa |
| 21 | Pansy Mann | 30 | Wife | — | Illinois |
| 22 | William Mann THIS PERSON | 11 | Son | — | Iowa |
| 23 | Alvena Mann | 10 | Daughter | — | Iowa |
| 24 | Delores Mann | 9 | Daughter | — | Iowa |
| 25 | Caroline Mann | 6 | Daughter | — | Iowa |
| 26 | Jackie Mann | 2 | Son | — | Iowa |
| 27 | Brenda Mann | 1 | Daughter | — | Iowa |
| 28 | Glenda Mann | 1 | Daughter | — | Iowa |
| 29 | Charles Luebke | 56 | Head | Hoist Operator | Missouri |
| 30 | Lydia Luebke | 49 | Wife | — | Wisconsin |
| 31 | Doris Luebke | 17 | Daughter | — | Iowa |
| 32 | Janet Luebke | 15 | Daughter | — | Iowa |
| 33 | Richard Luebke | 9 | Son | — | Iowa |
| 34 | Clarence Schmidt | 40 | Head | Auto Sales Manager | Iowa |
| 35 | Emma Schmidt | 39 | Wife | — | Iowa |
| 36 | John W. Wood | 63 | Father-in-law | — | Illinois |
| 37 | Lena Wood | 58 | Mother-in-law | — | Illinois |
| 38 | Tony Cramer | 61 | Head | Gardener | Iowa |
| 39 | Grace Cramer | 64 | Wife | — | Iowa |
| 40 | Lloyd Cramer | 20 | Son | — | Iowa |
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)