WM
William Mullen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mills-County, Iowa
Our Model Tree links this William Mullen across the 1930 and 1940 US Censuses in Mills-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mills-County, Iowa |
| Surname | Mullen |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Glenwood |
| Additional Details | |
| Highest Grade | Yes 3 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Indian Creek Township |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Mullen | Son | — | 11 | ~1929 |
| Lawrence Mullen | Son | — | 1 | ~1939 |
| Kenneth Mullen | Son | — | 9 | ~1931 |
| Mary Mullen | Daughter | — | 3 | ~1937 |
| Laveta Mullen | Spouse | — | 31 | ~1909 |
| Patricia Mullen | Daughter | — | 5 | ~1935 |
| Edwin Mullen | Son | — | 7 | ~1933 |
| Patrick Mullen | Head | — | 39 | ~1901 |
Census Appearances
1930
Mills, Iowa
Son, age 1
Mills, Iowa · implied b. ~1929 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mullins |
| Given Name | William L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Mills-County, Iowa
Son, age 11
Mills-County, Iowa · implied b. ~1929 — 8 household members
| Surname | Mullen |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Glenwood |
| Highest Grade | Yes 3 |
| 1935 Residence | Iowa |
| 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 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Patricia Mullen
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mullen
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Mullen
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edwin Mullen
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Mullen
Sibling · 1940 · age 1
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 — Mills-County, Iowa
Open full size
1940 US Federal Census — Mills-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01183-00248)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Iva Jensen | 20 | Stepdaughter | Farmer | Colorado |
| 2 | Mary Ellen Bass | 16 | Stepdaughter | — | Colorado |
| 3 | George Bass | 13 | Stepson | — | Colorado |
| 4 | Irving Wayne Bass | 11 | Stepson | — | Colorado |
| 5 | Euphie Salmons | 74 | Head | — | Illinois |
| 6 | John A. Taylor | 72 | Head | Farmer | Canada |
| 7 | Helen Mcinnan | 75 | Aunt | Housekeeper | Canada |
| 8 | John Parker | 47 | Head | Farmer | Kansas |
| 9 | Edith Parker | 42 | Wife | — | Iowa |
| 10 | Hadley Parker | 20 | Son | — | Iowa |
| 11 | Marion Parker | 18 | Son | Mechanic | Iowa |
| 12 | Arville Mercer | 22 | Hired Man | Farm Laborer | Iowa |
| 13 | Milton Ostrander | 73 | Head | Farmer | Ohio |
| 14 | Lodema Ostrander | 74 | Wife | — | Pennsylvania |
| 15 | Kenneth Adair | 24 | Head | Farm Worker | Iowa |
| 16 | Ruby Adair | 23 | Wife | — | Iowa |
| 17 | Lavon Adair | 3 | Daughter | — | Iowa |
| 18 | Kenneth Adair | 0 | Son | — | Iowa |
| 19 | Cloid Mcdowell | 48 | Head | Farmer | Iowa |
| 20 | Maud Mcdowell | 41 | Wife | — | Iowa |
| 21 | Raymond Mcdowell | 14 | Son | — | Iowa |
| 22 | Edie Darlene Mcdowell | 9 | Daughter | — | Iowa |
| 23 | Patrick Mullen | 39 | Head | Farm Laborer | Missouri |
| 24 | Laveta Mullen | 31 | Wife | — | Missouri |
| 25 | William Mullen THIS PERSON | 11 | Son | — | Iowa |
| 26 | Kenneth Mullen | 9 | Son | — | Iowa |
| 27 | Edwin Mullen | 7 | Son | — | Iowa |
| 28 | Patricia Mullen | 5 | Daughter | — | Iowa |
| 29 | Mary Mullen | 3 | Daughter | — | Iowa |
| 30 | Lawrence Mullen | 1 | Son | — | Iowa |
| 31 | Clyde Judah | 28 | Head | Farmer | Iowa |
| 32 | Virginia Judah | 25 | Wife | — | Iowa |
| 33 | Carolyn Judah | 1 | Daughter | — | Iowa |
| 34 | James Ungry | 52 | Head | Farmer | Kansas |
| 35 | Mabel Ungry | 50 | Wife | — | Iowa |
| 36 | Francis Ungry | 21 | Son | Farm Laborer | Iowa |
| 37 | Will E. Mcgrew | 76 | Head | — | Ohio |
| 38 | Joanna Mcgrew | 70 | Wife | — | Illinois |
| 39 | Edward Birdsall | 76 | Head | — | Illinois |
| 40 | Mary D. Birdsall | 77 | Wife | — | Illinois |
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)