WM
William Mullen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cerro-Gordo-County, Iowa
Our Model Tree links this William Mullen across the 1930 and 1940 US Censuses in Cerro-Gordo-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 13-person household.
Age 20
b. ~1920
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cerro-Gordo-County, Iowa |
| Surname | Mullen |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Pleasant Valley Twp |
| 1935 Residence (County) | Cerro Gordo |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 96 |
| Income (1939) | 450 |
| Highest Grade | S 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Pleasant Valley Twp |
| Est. Birth Year | ~1920 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Robert Mullen | Son | — | 14 | ~1926 |
| Rose Mullen | Other | — | 6 | ~1934 |
| Charles Mullen | Son | — | 6 | ~1934 |
| Eugene Mullen | Other | — | 39 | ~1901 |
| Beulah Mullen | Other | — | 7 | ~1933 |
| Georgia Mullen | Daughter | — | 7 | ~1933 |
| Bernard Mullen | Son | — | 9 | ~1931 |
| Elizabeth Mullen | Daughter | — | 4 | ~1936 |
| William Mullen | Son | — | 20 | ~1920 |
| Edmund Mullen | Son | — | 12 | ~1928 |
| June Mullen | Other | — | 8 | ~1932 |
| John Mullen | Son | — | 3 | ~1937 |
| John Mullen | Head | — | 52 | ~1888 |
Census Appearances
1930
Cerro Gordo, …
Son, age 10
Cerro Gordo, Iowa · implied b. ~1920 — 49 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mullins |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Oregon |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cerro-Gordo-County, Iowa
Son, age 20
Cerro-Gordo-County, Iowa · implied b. ~1920 — 13 household members
| Surname | Mullen |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Pleasant Valley Twp |
| 1935 Residence (County) | Cerro Gordo |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 96 |
| Income (1939) | 450 |
| Highest Grade | S 8 |
| 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 Mullen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mullen
Son · 1940 · age 20 · b. ~1920 · Iowa
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Sibling
Georgia Mullen
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mullen
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mullen
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mullen
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edmund Mullen
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mullen
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Mullen
Sibling · 1940 · age 9
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 — Cerro-Gordo-County, Iowa
Open full size
1940 US Federal Census — Cerro-Gordo-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01146-01202)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Kennard Miller | 14 | Son | — | Iowa |
| 2 | Mary Miller | 9 | Daughter | — | Iowa |
| 3 | De Anne Miller | 8 | Daughter | — | Iowa |
| 4 | Wilhelm Christiansen | 33 | Head | Farmer | Iowa |
| 5 | Alice Christiansen | 23 | Wife | — | Iowa |
| 6 | Raymond Jorgensen | 32 | Hired Hand | Farmer | Minnesota |
| 7 | John Mullen | 52 | Head | Laborer | Virginia |
| 8 | William Mullen THIS PERSON | 20 | Son | Farmer | Iowa |
| 9 | Robert Mullen | 14 | Son | Helper | Iowa |
| 10 | Edmund Mullen | 12 | Son | — | Iowa |
| 11 | Bernard Mullen | 9 | Son | — | Iowa |
| 12 | Georgia Mullen | 7 | Daughter | — | Iowa |
| 13 | Charles Mullen | 6 | Son | — | Iowa |
| 14 | Elizabeth Mullen | 4 | Daughter | — | Iowa |
| 15 | John Mullen | 3 | Son | — | Iowa |
| 16 | Eugene Mullen | 39 | Brother-in-law | Laborer | Iowa |
| 17 | June Mullen | 8 | Niece | — | Iowa |
| 18 | Beulah Mae Mullen | 7 | Niece | — | Iowa |
| 19 | Rose Mullen | 6 | Niece | — | Iowa |
| 20 | Rudolph Steuer | 34 | Head | Farming | Iowa |
| 21 | Josephine Steuer | 30 | Wife | — | Delaware |
| 22 | Anna Steuer | 65 | Mother | — | Germany |
| 23 | Herman Rurup | 28 | Hired Hand | Laborer | Iowa |
| 24 | Otto Dannen | 52 | Head | Farmer | Germany |
| 25 | Mattie Dannen | 46 | Wife | — | Iowa |
| 26 | Elsie A. Dannen | 23 | Daughter | Farmer | Iowa |
| 27 | Eagle H. Dannen | 21 | Son | Farmer | Iowa |
| 28 | Florence Dannen | 16 | Daughter | — | Iowa |
| 29 | Viola Dannen | 11 | Daughter | — | Iowa |
| 30 | William Hurtbatch | 36 | Head | Farmer | Iowa |
| 31 | Edna Hurtbatch | 47 | Wife | — | Iowa |
| 32 | Gibson Hurtbatch | 32 | Son | Farmer | Iowa |
| 33 | Alwilda Kramer | 27 | Daughter | — | Iowa |
| 34 | Don Eela Kramer | 8 | Granddaughter | — | Iowa |
| 35 | Jerry Kramer | 5 | Grandson | — | Iowa |
| 36 | Robert Ward | 65 | Head | — | Missouri |
| 37 | Hattie Ward | 66 | Wife | — | Iowa |
| 38 | Robert Ward | 17 | Grandson | — | Iowa |
| 39 | Hannah Ward | 13 | Granddaughter | — | Iowa |
| 40 | Bonnie Ward | 12 | Granddaughter | — | 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)