MD
Mary Delaney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this Mary Delaney across the 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1901), then head of a 8-person household.
Age 39
b. ~1901
Female
Spouse
Born: Nebraska
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | Delaney |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Sioux City City |
| 1935 Residence (County) | Woodbury |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Township / Ward | Sioux City City |
| Est. Birth Year | ~1901 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Delaney | Spouse | — | 39 | ~1901 |
| Michael Delaney | Son | — | 3 | ~1937 |
| Sally Delaney | Daughter | — | 1 | ~1939 |
| Barry Delaney | Son | — | 17 | ~1923 |
| Marylin Delaney | Daughter | — | 18 | ~1922 |
| Raymond Delaney | Head | — | 42 | ~1898 |
| Claire Lippolt | Other | — | 30 | ~1910 |
| Nancy Delaney | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Woodbury, Iowa
Other, age 29
Woodbury, Iowa · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Delaney |
| Given Name | Mary F |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Nebraska |
| Age at First Marriage | 19 |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Nebraska |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Woodbury-County, Iowa
Spouse, age 39
Woodbury-County, Iowa · implied b. ~1901 — 8 household members
| Surname | Delaney |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Sioux City City |
| 1935 Residence (County) | Woodbury |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Mary Delaney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Delaney
Spouse · 1940 · age 39 · b. ~1901 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Woodbury-County, Iowa
Open full size
1940 US Federal Census — Woodbury-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01215-00727)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Maxine Quigley | 10 | daughter | — | Iowa |
| 42 | Ella May Quigley | 8 | daughter | — | Iowa |
| 43 | Harry Jr. Quigley | 6 | son | — | Iowa |
| 44 | William Quigley | 3 | son | — | Iowa |
| 45 | Allison Miller | 42 | Head | Assistant Cashier | Nebraska |
| 46 | Francis Miller | 42 | wife | — | Nebraska |
| 47 | Donald Miller | 17 | son | Paper Carrier | Iowa |
| 48 | Anna Miller | 78 | mother | — | New Hampshire |
| 49 | Raymond Delaney | 42 | Head | Manager | Nebraska |
| 50 | Mary Delaney THIS PERSON | 39 | wife | — | Nebraska |
| 51 | Marylin Delaney | 18 | daughter | Clerk | Nebraska |
| 52 | Barry Delaney | 17 | son | — | Nebraska |
| 53 | Nancy Delaney | 10 | daughter | — | Iowa |
| 54 | Michael Delaney | 3 | son | — | Iowa |
| 55 | Sally Clare Delaney | 1 | daughter | — | Iowa |
| 56 | Claire Lippolt | 30 | Housekeeper | Maid | Nebraska |
| 57 | Patrick W. D. Bray | 73 | Head | — | Wisconsin |
| 58 | Margaret Bray | 69 | wife | — | Illinois |
| 59 | George N. Bray | 42 | son | Manager | Iowa |
| 60 | Mary Bohn | 68 | Head | — | Norway |
| 61 | John L. Upton | 57 | Head | Route Man | Wisconsin |
| 62 | Dorothy F. Upton | 35 | wife | — | Iowa |
| 63 | Leonora Schultz | 20 | lodger | Teacher | Nebraska |
| 64 | Harvey J. Hofman | 55 | Head | Engineer | Missouri |
| 65 | Lena E. Hofman | 55 | wife | — | Iowa |
| 66 | William Dekay | 47 | Head | Optician | Iowa |
| 67 | Ruth Dekay | 47 | wife | — | Minnesota |
| 68 | Shirley Dekay | 16 | daughter | — | Iowa |
| 69 | Hunter | 50 | brother | — | Iowa |
| 70 | Ralph P. Ross | 51 | Head | Secretary | Ohio |
| 71 | Ethel Ross | 47 | wife | — | Iowa |
| 72 | Jean Marie Ross | 5 | daughter | — | Missouri |
| 73 | R. Edward Dunlap | 38 | Head | Clerk | South Dakota |
| 74 | Ardath G. Dunlap | 34 | wife | — | Iowa |
| 75 | Alice Louise Dunlap | 5 | daughter | — | Iowa |
| 76 | Alice Dunlap | 60 | mother | — | Ohio |
| 77 | Thomas Cullin | 57 | Head | Conductor | Iowa |
| 78 | Cary Cullin | 57 | wife | — | South Dakota |
| 79 | Evelyn Cullin | 23 | daughter | Stenographer | Washington |
| 80 | George D. De Witt | 65 | Head | — | Kansas |
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)