DA
Donald Allen — 1940 US Census Record
Model Tree available1940 United States Federal Census · Butler-County, Iowa
Our Model Tree links this Donald Allen across the 1920, 1930 and 1940 US Censuses in Butler-County, Iowa (XGBoost, ~Confirmed), with identified parents William & Clara — first a head (b.~1911), then head of a 4-person household.
Age 29
b. ~1911
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Butler-County, Iowa |
| Surname | Allen |
| Given Name | Donald V. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Floyd |
| Additional Details | |
| Occupation | farming |
| Industry | tenant farmer |
| Class of Worker | OA |
| Hours Worked | 80 |
| Income (1939) | 520 |
| Highest Grade | H-1 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farming |
| Township / Ward | Bennezette |
| Est. Birth Year | ~1911 |
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 Donald | Age | Birth yr |
|---|---|---|---|---|
| James Allen | Son | — | 6 | ~1934 |
| Donald Allen | Head | — | 29 | ~1911 |
| Marlys Allen | Daughter | — | 4 | ~1936 |
| Thelma Allen | Spouse | — | 26 | ~1914 |
Census Appearances
1920
Butler, Iowa
Son, age 9
Butler, Iowa · implied b. ~1911 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allan |
| Given Name | Donald E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | England |
| Mother's Birthplace | Iowa |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Butler, Iowa
Son, age 19
Butler, Iowa · implied b. ~1911 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Allen |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | England |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Butler-County, Iowa
Head, age 29
Butler-County, Iowa · implied b. ~1911 — 4 household members
| Surname | Allen |
| Given Name | Donald V. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Floyd |
| Occupation | farming |
| Industry | tenant farmer |
| Class of Worker | OA |
| Hours Worked | 80 |
| Income (1939) | 520 |
| Highest Grade | H-1 |
| 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 Donald Allen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Allen (~0.92 confidence) and mother Clara Allan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Allen
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Clara Allan
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Allen
Head · 1940 · age 29 · b. ~1911 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Butler-County, Iowa
Open full size
1940 US Federal Census — Butler-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01143-00705)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marion W. Kollmann | 30 | Head | Day Laborer | Iowa |
| 42 | Gladys E. Kollmann | 25 | Wife | — | Canada |
| 43 | Alexander F. Hammond | 32 | Head | Day Laborer | Scotland |
| 44 | Bettie B. Hammond | 26 | Wife | — | Scotland |
| 45 | Alexander W. Hammond | 11 | Son | — | Pennsylvania |
| 46 | Bettie F. Hammond | 9 | Daughter | — | Pennsylvania |
| 47 | Mary Hammond | 7 | Daughter | — | Pennsylvania |
| 48 | Robert D. Hammond | 2 | Son | — | Pennsylvania |
| 49 | Jay Clark | 34 | Head | Month Laborer | Iowa |
| 50 | Viola A. Clark | 22 | Wife | — | Minnesota |
| 51 | Donna M. Clark | 2 | Daughter | — | Iowa |
| 52 | Sherman K. Clark | 0 | Son | — | Iowa |
| 53 | Roy C. Ott | 52 | Head | Farming | Pennsylvania |
| 54 | Esther M. Ott | 49 | Wife | — | Pennsylvania |
| 55 | Malcolm J. Ott | 23 | Son | Farming | Pennsylvania |
| 56 | Mary D. Ott | 21 | Daughter | Housework | Iowa |
| 57 | Erma G. Ott | 18 | Daughter | Clerk | Iowa |
| 58 | Evelyn N. Ott | 16 | Daughter | — | Iowa |
| 59 | Richard E. Ott | 15 | Son | — | Iowa |
| 60 | Ella B. Ott | 14 | Daughter | — | Iowa |
| 61 | Harold E. Ott | 12 | Son | — | Iowa |
| 62 | Iris F. Ott | 10 | Daughter | — | Iowa |
| 63 | Donald R. Ott | 8 | Son | — | Iowa |
| 64 | James W. Ott | 6 | Son | — | Iowa |
| 65 | Larry E. Ott | 4 | Son | — | Iowa |
| 66 | Richard R. Menken | 69 | Head | Farming | Germany |
| 67 | Maggie Menken | 68 | Wife | — | Germany |
| 68 | John E. Menken | 24 | Son | Farming | Iowa |
| 69 | Julia M. Menken | 22 | Daughter-in-law | — | Iowa |
| 70 | Jim E. Menken | 2 | Grandson | — | Iowa |
| 71 | Donald V. Allen THIS PERSON | 29 | Head | Farming | Iowa |
| 72 | Thelma F. Allen | 26 | Wife | — | Iowa |
| 73 | James M. Allen | 6 | Son | — | Iowa |
| 74 | Marlys Y. Allen | 4 | Daughter | — | Iowa |
| 75 | Alfred D. Bequelin | 54 | Head | Farming | Illinois |
| 76 | Edna S. Bequelin | 53 | Wife | — | Illinois |
| 77 | Doris E. Bequelin | 22 | Daughter | Teaching | Iowa |
| 78 | Francis S. Bequelin | 20 | Son | Farming | Iowa |
| 79 | Howard R. Bequelin | 20 | Son | School Pupil | Iowa |
| 80 | Sorenus C. Hansen | 60 | Head | Farming | Iowa |
Pedigree Summary
Donald
Gen 1 · 2 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)