MC
Mary Carney — 1930 US Census Record
Model Tree available1930 United States Federal Census · Polk, Iowa
Our Model Tree links this Mary Carney across the 1910, 1920 and 1930 US Censuses in Polk, Iowa (XGBoost, ~Confirmed), with identified parents Walter & Walter — first a daughter (b.~1903), then head of a 8-person household.
Age 27
b. ~1903
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Polk, Iowa |
| Surname | Carney |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Nurse Graduate |
| Industry | Private Hospital |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Nurse Graduate |
| Township / Ward | Saylor Township |
| Est. Birth Year | ~1903 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Carney | Daughter | — | 27 | ~1903 |
| Charles Carney | Son | — | 19 | ~1911 |
| Lloyd Carney | Son | — | 21 | ~1909 |
| Francis Carney | Son | — | 14 | ~1916 |
| Walter Carney | Head | — | 53 | ~1877 |
| Hugh Carney | Son | — | 23 | ~1907 |
| J Carney | Son | — | 10 | ~1920 |
| Minnie Carney | Other | — | 48 | ~1882 |
Census Appearances
1910
Polk, Iowa
Daughter, age 7
Polk, Iowa · implied b. ~1903 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carney |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Polk, Iowa
Daughter, age 17
Polk, Iowa · implied b. ~1903 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 27
Polk, Iowa · implied b. ~1903 — 8 household members
| Surname | Carney |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Nurse Graduate |
| Industry | Private Hospital |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 Carney across 3 US Census years (1910, 1920 and 1930) in Polk, Iowa, using XGBoost record linkage. Identified parents: father Walter Carney (~0.92 confidence) and father Walter Carney (~0.92 confidence) and father Walter Carney (~0.92 confidence) and mother Minnie Carney (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Walter Carney
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Walter Carney
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Walter Carney
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Minnie Carney
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Carney
Daughter · 1930 · age 27 · b. ~1903 · Iowa
★ You are viewing this record
Sibling
Lloyd Carney
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Carney
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Carney
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
J Carney
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hugh Carney
Sibling · 1930 · age 23
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
1930 US Federal Census — Polk, Iowa
Open full size
1930 US Federal Census — Polk, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel678:0152)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Margaret J. Eckert | 68 | Mother | — | New York |
| 52 | Alverda N. Eckert | 39 | Sister H | House Keeper | Iowa |
| 53 | George M. Richardson | 62 | Head | Road Patrolman | Iowa |
| 54 | Minnie Richardson | 57 | Wife | — | Iowa |
| 55 | Harry P. Richardson | 19 | Son | Laborer | Iowa |
| 56 | Dale E. Richardson | 18 | Son | School Bus Driver | Iowa |
| 57 | John J. Richardson | 15 | Son | Farming | Iowa |
| 58 | Lottie L. Drake | 19 | Lodger | School Teacher | Iowa |
| 59 | R. Benjamin Hess | 36 | Head | Farming | Iowa |
| 60 | Maude C. Hess | 35 | Wife H | — | Iowa |
| 61 | Mildred B. Hess | 8 | Daughter | — | Iowa |
| 62 | June A. Hess | 6 | Daughter | — | Iowa |
| 63 | Lowell A. Hess | 3 | Son | — | Iowa |
| 64 | Velma L. Hess | 1 | Daughter | — | Iowa |
| 65 | Hunter C. Hess | 32 | Brother | Laborer | Iowa |
| 66 | Chase H. Hurst | 38 | Hired Man | Laborer | Iowa |
| 67 | Henry J. Herman | 67 | Head | Farmer | Nebraska |
| 68 | Elsie M. Herman | 59 | Wife H | — | Pennsylvania |
| 69 | John E. Herman | 39 | Son | Laborer | Nebraska |
| 70 | Charles M. Herman | 33 | Son | Laborer | Nebraska |
| 71 | Rachel B. Herman | 31 | Son | Laborer | Nebraska |
| 72 | Ivan Herman | 25 | Son | Laborer | Iowa |
| 73 | Harry Herman | 21 | Son | Laborer | Iowa |
| 74 | Eny De Horst | 42 | Head | Farmer | Iowa |
| 75 | Hattie De Horst | 72 | Mother | — | Iowa |
| 76 | Simon De Horst | 50 | Head | Laborer | Iowa |
| 77 | Jennie De Horst | 45 | Wife H | — | Iowa |
| 78 | River C. Richardson | 31 | Head | Farmer | Iowa |
| 79 | Leona S. Richardson | 32 | Wife H | — | Iowa |
| 80 | Clark M. Richardson | 0 | Son | — | Iowa |
| 81 | Walter Carney | 53 | Head | Farmer | Iowa |
| 82 | Minnie E. Carney | 48 | Wife H | — | Iowa |
| 83 | Hugh Carney | 23 | Son | Farmer | Iowa |
| 84 | Charles Carney | 19 | Son | Farmer | Iowa |
| 85 | Francis L. Carney | 14 | Son | Farmer | Iowa |
| 86 | J. Roland Carney | 10 | Son | Farmer | Iowa |
| 87 | Mary E. Carney THIS PERSON | 27 | Daughter | Nurse Graduate | Iowa |
| 88 | Lloyd E. Carney | 21 | Son | Auto Mechanic | Iowa |
| 89 | Albert E. Carney | 57 | Head | Farmer | Iowa |
| 90 | Roger F. Carney | 52 | Wife H | — | Iowa |
| 91 | Clarence Allen | 25 | Hired Man | Laborer | Indiana |
| 92 | Leo E. Carney | 28 | Head | Farmer | Iowa |
| 93 | Estell C. Carney | 28 | Wife H | — | Iowa |
| 94 | Marilyn A. Carney | 0 | Daughter | — | Iowa |
| 95 | Sheldon May | 32 | Hired Man | Farm Laborer | Iowa |
| 96 | Lawrence H. Williams | 30 | Head | Farmer | Illinois |
| 97 | Ruth J. Williams | 28 | Wife H | — | Iowa |
| 98 | Dean K. Williams | 7 | Son | — | Iowa |
| 99 | Doris Williams | 6 | Daughter | — | Iowa |
| 100 | Betty L. Williams | 4 | Daughter | — | Iowa |
Pedigree Summary
Mary + 5 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)