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Mary Boyle — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Woodbury-County, Iowa
Our Model Tree links this Mary Boyle across the 1930 and 1940 US Censuses in Woodbury-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 8-person household.
Age 10
b. ~1930
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Woodbury-County, Iowa |
| Surname | Boyle |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Sioux City |
| Est. Birth Year | ~1930 |
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 |
|---|---|---|---|---|
| Bernice Boyle | Daughter | — | 15 | ~1925 |
| Carmel Boyle | Daughter | — | 5 | ~1935 |
| Pearl Boyle | Daughter | — | 4 | ~1936 |
| Mary Boyle | Daughter | — | 10 | ~1930 |
| Dominic Boyle | Head | — | 56 | ~1884 |
| George Boyle | Son | — | 16 | ~1924 |
| Donald Boyle | Son | — | 19 | ~1921 |
| Elizabeth Boyle | Spouse | — | 49 | ~1891 |
Census Appearances
1930
Woodbury, Iowa
Daughter, age 1
Woodbury, Iowa · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyle |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Woodbury-County, Iowa
Daughter, age 10
Woodbury-County, Iowa · implied b. ~1930 — 8 household members
| Surname | Boyle |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Sioux City |
| 1935 Residence (County) | Woodbury |
| Highest Grade | No 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 Mary Boyle across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Boyle
Daughter · 1940 · age 10 · b. ~1930 · Iowa
★ You are viewing this record
Sibling
Donald Boyle
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pearl Boyle
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carmel Boyle
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Boyle
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Boyle
Sibling · 1940 · age 15
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 — 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-t0627-01215-00786)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Kay Klein | 1 | Daughter | — | Iowa |
| 42 | Joseph L. Lang | 46 | Head | Assistant Yardman | South Dakota |
| 43 | Gladys H. Lang | 39 | Wife | — | Iowa |
| 44 | Clayton Lang | 19 | Son | Professional Ball Player | Iowa |
| 45 | Victor Peterson | 44 | Head | Barber | Iowa |
| 46 | Emma Peterson | 43 | Wife | — | Iowa |
| 47 | Robert Peterson | 13 | Son | — | Iowa |
| 48 | Harry Gereau | 43 | Head | Proprietor | Minnesota |
| 49 | Esther Gereau | 42 | Wife | — | Wisconsin |
| 50 | Donald Gereau | 19 | Son | Wholesale Operator | North Dakota |
| 51 | Jack Gereau | 9 | Son | — | Iowa |
| 52 | Ernest L. Pike | 78 | Head | — | Wisconsin |
| 53 | Nora Pike | 70 | Wife | — | Wisconsin |
| 54 | Ella Shoults | 42 | Daughter | Cashier | Iowa |
| 55 | Harold Dougherty | 46 | Head | Clerk | Iowa |
| 56 | Mae Dougherty | 45 | Wife | — | Iowa |
| 57 | Mary D. Dougherty | 13 | Daughter | — | Iowa |
| 58 | Lois G. Dougherty | 11 | Daughter | — | Iowa |
| 59 | George Hovass | 50 | Head | Meat Cutter | Norway |
| 60 | Margaret Hovass | 44 | Wife | — | England |
| 61 | Dorothy Hovass | 25 | Daughter | — | Iowa |
| 62 | Charles Hovass | 19 | Son | Deliveryman | Iowa |
| 63 | William Hovass | 13 | Son | — | Nebraska |
| 64 | Juanita Hovass | 10 | Daughter | — | Nebraska |
| 65 | Walter Kelly | 22 | Son-in-law | Salesman | Nebraska |
| 66 | Beatrice Kelly | 22 | Daughter | — | Iowa |
| 67 | Anita Kelly | 1 | Grand-Daughter | — | Iowa |
| 68 | Dominic Boyle | 56 | Head | Carpenter | Iowa |
| 69 | Elizabeth H. Boyle | 49 | Wife | — | Illinois |
| 70 | Donald E. Boyle | 19 | Son | Cement Worker | Nebraska |
| 71 | George B. Boyle | 16 | Son | New Worker | Iowa |
| 72 | Bernice H. Boyle | 15 | Daughter | — | Iowa |
| 73 | Mary L. Boyle THIS PERSON | 10 | Daughter | — | Iowa |
| 74 | Carmel Boyle | 5 | Daughter | — | Iowa |
| 75 | Pearl Boyle | 4 | Daughter | — | Nebraska |
| 76 | Joseph B. Corrigan | 49 | Head | Warehouse Manager | Illinois |
| 77 | Blanche Corrigan | 43 | Wife | — | Missouri |
| 78 | Mary J. Corrigan | 20 | Daughter | — | South Dakota |
| 79 | Ned J. Echoon | Echoen | 23 | Head | Baker | South Dakota |
| 80 | Clarice Echoon | Echoen | 21 | Wife | — | 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)