HS
Helen Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wapello-County, Iowa
Our Model Tree links this Helen Sullivan across the 1920, 1930 and 1940 US Censuses in Wapello-County, Iowa (XGBoost, ~Confirmed), with identified parents Thos & John — first a daughter (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wapello-County, Iowa |
| Surname | Sullivan |
| Given Name | Helen L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ottumwa City |
| 1935 Residence (County) | Wapello County |
| Additional Details | |
| Occupation | Canning dept |
| Industry | Meat packers |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 864 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Canning Dept |
| Township / Ward | Ottumwa City |
| Est. Birth Year | ~1916 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Gretchen Sullivan | Daughter | — | 13 | ~1927 |
| Helen Sullivan | Daughter | — | 24 | ~1916 |
| Thos Sullivan | Head | — | 60 | ~1880 |
| Barbara Sullivan | Other | — | 9 | ~1931 |
| Gilbert Sullivan | Son | — | 18 | ~1922 |
| Mary Sullivan | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Wapello, Iowa
Daughter, age 4
Wapello, Iowa · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Helen L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Germany |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Wapello, Iowa
Daughter, age 14
Wapello, Iowa · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Wapello-County, Iowa
Daughter, age 24
Wapello-County, Iowa · implied b. ~1916 — 6 household members
| Surname | Sullivan |
| Given Name | Helen L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ottumwa City |
| 1935 Residence (County) | Wapello County |
| Occupation | Canning dept |
| Industry | Meat packers |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 864 |
| Highest Grade | H 4 |
| 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 Helen Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thos Sullivan (~0.92 confidence) and father John Sullivan (~0.92 confidence) and father J Sullivan (~0.92 confidence) and mother Jessy Sullivan (~0.92 confidence) and mother Lucy Sullivan (~0.92 confidence) and mother Mary Sullivan (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thos Sullivan
b. ~1880
Source father
● Household
· direct · ~0.92
Father
John Sullivan
b. ~1881
Source father
● Household
· direct · ~0.92
Father
J Sullivan
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Jessy Sullivan
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Lucy Sullivan
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Mary Sullivan
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Sullivan
Daughter · 1940 · age 24 · b. ~1916 · Iowa
★ You are viewing this record
Sibling
Gilbert Sullivan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gretchen Sullivan
Sibling · 1940 · age 13
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 — Wapello-County, Iowa
Open full size
1940 US Federal Census — Wapello-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01209-00204)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Irene K Kervin | 17 | Daughter | New Worker | South Dakota |
| 42 | Marion L Kervin | 14 | Daughter | New Worker | South Dakota |
| 43 | Mary A Stevens | 76 | Mother-in-law | — | New York State |
| 44 | Clyde E Ventura | 58 | Head | Truck Driver | Illinois |
| 45 | Ethel B Ventura | 46 | Wife | Alterations | Iowa |
| 46 | Alice Packman | 44 | Head | Railway Mail Clerk | Iowa |
| 47 | Emmett B Packman | 43 | Husband | Teacher | Wisconsin |
| 48 | Jack M Packman | 17 | Son | New Worker | Iowa |
| 49 | Howard H Brown | 25 | Head | Auto Salesman | Pennsylvania |
| 50 | Margaret M Brown | 26 | Wife | New Worker | Iowa |
| 51 | Jerry M Brown | 2 | Son | — | Iowa |
| 52 | Thos J Sullivan | 60 | Head | Barber | Iowa |
| 53 | Mary J Sullivan | 51 | Wife | Housekeeper | Iowa |
| 54 | Helen L Sullivan THIS PERSON | 24 | Daughter | Canning Dept | Iowa |
| 55 | Gilbert J Sullivan | 18 | Son | Key Maker | Iowa |
| 56 | Gretchen J Sullivan | 13 | Daughter | — | Iowa |
| 57 | Barbara L Sullivan | 9 | Granddaughter | — | Iowa |
| 58 | Ivan E Hulgens | 54 | Head | Stationary Engineer | Iowa |
| 59 | Agnes L Hulgens | 59 | Wife | Cigar Maker | Indiana |
| 60 | John E Hulgens | 80 | Father | Mechanic | Iowa |
| 61 | John R French | 57 | Head | Coal Dealer | Iowa |
| 62 | Anna L French | 57 | Wife | Housekeeper | South Dakota |
| 63 | Delbert R Harlan | 63 | Head | Secretary | Iowa |
| 64 | L Blanche Harlan | 62 | Wife | New Worker | Kansas |
| 65 | Glen E Mccurdy | 40 | Head | Civil Engineer | Iowa |
| 66 | Velma P Mccurdy | 38 | Wife | Stenographer | Montana |
| 67 | Patricia J Mccurdy | 11 | Daughter | — | Iowa |
| 68 | Glen Jr Mccurdy | 3 | Son | — | Iowa |
| 69 | Thomas J Denny | 54 | Head | Truck Driver | Iowa |
| 70 | Nellie M Denny | 54 | Wife | Housekeeper | Iowa |
| 71 | William T Denny | 19 | Son | Truck Driver | Iowa |
| 72 | Wilbur F Denny | 16 | Son | New Worker | Iowa |
| 73 | Helen E Denny | 14 | Daughter | New Worker | Iowa |
| 74 | Mary J Denny | 12 | Daughter | — | Iowa |
| 75 | Thomas C Murphy | 42 | Head | Laborer | Iowa |
| 76 | Mildred L Murphy | 32 | Wife | Nursemaid | Iowa |
| 77 | Thomas E Murphy | 13 | Son | — | Iowa |
| 78 | John J Murphy | 12 | Son | — | Iowa |
| 79 | Shirley D Murphy | 9 | Daughter | — | Iowa |
Pedigree Summary
Helen + 2 siblings
Gen 1 · 6 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)