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Mary Black — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Madison, Iowa
Our Model Tree links this Mary Black across the 1930 and 1940 US Censuses in Madison, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 24-person household.
Age 8
b. ~1922
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Madison, Iowa |
| Surname | Black |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | South Township Part Of |
| Est. Birth Year | ~1922 |
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.
24 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Virginia Durand | Daughter | — | 1 | ~1929 |
| Maribel Durand | Daughter | — | 4 | ~1926 |
| Mary Black | Daughter | — | 8 | ~1922 |
| Martha Durand | Daughter | — | 8 | ~1922 |
| Betty Black | Daughter | — | 5 | ~1925 |
| Jack Barting | Head | — | 64 | ~1866 |
| William Arnold | Other | — | 61 | ~1869 |
| George Durand | Other | — | 36 | ~1894 |
| Albert Holden | Other | — | 42 | ~1888 |
| William Black | Other | — | 39 | ~1891 |
| Charley Carman | Other | — | 62 | ~1868 |
| Everett Durand | Other | — | 34 | ~1896 |
| Peter Carter | Other | — | 62 | ~1868 |
| William Imes | Other | — | 75 | ~1855 |
| Roy Imes | Other | — | 34 | ~1896 |
| Herbert Durand | Other | — | 65 | ~1865 |
| Rolland Black | Son | — | 15 | ~1915 |
| Elsie Black | Spouse | — | 43 | ~1887 |
| Annie Carman | Spouse | — | 49 | ~1881 |
| Christina Imes | Spouse | — | 25 | ~1905 |
| Ella Arnold | Spouse | — | 58 | ~1872 |
| Eva Carter | Spouse | — | 54 | ~1876 |
| Lucile Durand | Spouse | — | 32 | ~1898 |
| Edna Durand | Spouse | — | 32 | ~1898 |
Census Appearances
1930
Madison, Iowa
Daughter, age 8
Madison, Iowa · implied b. ~1922 — 24 household members
| Surname | Black |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Madison-County, Iowa
Daughter, age 17
Madison-County, Iowa · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blake |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Guthrie |
| Highest Grade | 8 |
| 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 Mary Black across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Black
Daughter · 1930 · age 8 · b. ~1922 · Iowa
★ You are viewing this record
Sibling
Betty Black
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Durand
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maribel Durand
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Durand
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rolland Black
Sibling · 1930 · 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
1930 US Federal Census — Madison, Iowa
Open full size
1930 US Federal Census — Madison, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel666:1041)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles S. Hope | 55 | Head | Farmer | Iowa |
| 2 | Maud P. Hope | 54 | Wife | — | Kansas |
| 3 | Kenneth E. Hope | 20 | Son | Laborer | Iowa |
| 4 | Eldon E. Hope | 16 | Son | Laborer | Iowa |
| 5 | Thomas L. Grimes | 40 | Head | Farmer | Iowa |
| 6 | Vannetta R. Grimes | 32 | Wife | — | Iowa |
| 7 | Hazel D. Grimes | 6 | Daughter | — | Iowa |
| 8 | Juanita A. Grimes | 2 | Daughter | — | Iowa |
| 9 | Claude H. Holden | 33 | Head | Farmer | Illinois |
| 10 | Mabel A. Holden | 34 | Wife | — | Kansas |
| 11 | Cynthia M. Holden | 6 | Daughter | — | Idaho |
| 12 | Steward R. Dowler | 77 | Head | — | Pennsylvania |
| 13 | Sarah J. Dowler | 72 | Wife | — | Iowa |
| 14 | Asa R. Dowler | 37 | Son | Laborer | Iowa |
| 15 | Steward E. Dowler | 34 | Son | Laborer | Iowa |
| 16 | Berl Imes | 39 | Head | Farmer | Iowa |
| 17 | Ruby A. Imes | 36 | Wife | — | Iowa |
| 18 | Neil Imes | 17 | Son | Laborer | North Dakota |
| 19 | Philip B. Imes | 15 | Son | — | Iowa |
| 20 | Otto A. Christensen | 27 | Head | Farmer | Iowa |
| 21 | Esther L. Christensen | 30 | Wife | — | Iowa |
| 22 | Lois B. Christensen | 9 | Daughter | — | Iowa |
| 23 | Marcella M. Christensen | 4 | Daughter | — | Iowa |
| 24 | Moody Greenfield | 25 | Head | Farmer | Iowa |
| 25 | Merit Agan | 70 | R | Farmer | Iowa |
| 26 | Ida M. Agan | 65 | Wife | — | Iowa |
| 27 | Jack L. Barting | 64 | Head | Farmer | West Virginia |
| 28 | William Arnold | 61 | O | Farmer | Iowa |
| 29 | Ella Arnold | 58 | Wife | — | Iowa |
| 30 | Roy M. Imes | 34 | R | Farmer | Iowa |
| 31 | Christina M. Imes | 25 | Wife | — | Missouri |
| 32 | William J. Imes | 75 | Father | — | Ohio |
| 33 | Albert B. Holden | 42 | Boarder | Laborer | Illinois |
| 34 | William B. Black | 39 | R | Farmer | Iowa |
| 35 | Elsie J. Black | 43 | Wife | — | Iowa |
| 36 | Rolland E. Black | 15 | Son | — | Iowa |
| 37 | Mary A. Black THIS PERSON | 8 | Daughter | — | Iowa |
| 38 | Betty J. Black | 5 | Daughter | — | Iowa |
| 39 | George P. Durand | 36 | R | Farmer | Iowa |
| 40 | Edna M. Durand | 32 | Wife | — | Iowa |
| 41 | Virginia J. Durand | 1 | Daughter | — | Iowa |
| 42 | Herbert A. Durand | 65 | Father | — | Iowa |
| 43 | Everett D. Durand | 34 | R | Laborer | Iowa |
| 44 | Lucile Durand | 32 | Wife | — | Iowa |
| 45 | Martha L. Durand | 8 | Daughter | — | Iowa |
| 46 | Maribel Durand | 4 | Daughter | — | Iowa |
| 47 | Charley B. Carman | 62 | O | Farmer | Illinois |
| 48 | Annie Carman | 49 | Wife | — | Ireland |
| 49 | Peter E. Carter | 62 | O | Farmer | Iowa |
| 50 | Eva M. Carter | 54 | Wife | — | Iowa |
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)