MK
Mary Kerr — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Marion, Iowa
Our Model Tree links this Mary Kerr across the 1930 and 1940 US Censuses in Marion, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 5-person household.
Age 44
b. ~1886
Female
Spouse
Born: Iowa
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Marion, Iowa |
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 18 |
| Father's Birthplace | U.S.A. |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Polk Township |
| Est. Birth Year | ~1886 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Kerr | Spouse | — | 44 | ~1886 |
| Raymond Kerr | Son | — | 18 | ~1912 |
| Coda Kerr | Head | — | 50 | ~1880 |
| Milo Kerr | Son | — | 15 | ~1915 |
| Walt Kerr | Son | — | 21 | ~1909 |
Census Appearances
1930
Marion, Iowa
Spouse, age 44
Marion, Iowa · implied b. ~1886 — 5 household members
| Surname | Kerr |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 18 |
| Father's Birthplace | U.S.A. |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Marion-County, Iowa
Spouse, age 54
Marion-County, Iowa · implied b. ~1886 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Karr |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Polk Twp. |
| 1935 Residence (County) | Marion |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| 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 Kerr across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kerr
Spouse · 1930 · age 44 · b. ~1886 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Marion, Iowa
Open full size
1930 US Federal Census — Marion, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel668:0491)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lemington H Sharp | 56 | Head | Farmer | Kansas |
| 2 | Ida M Sharp | 38 | Wife | — | Missouri |
| 3 | Goldie H Sharp | 19 | Daughter | — | Iowa |
| 4 | Walter H Sharp | 18 | Son | — | Iowa |
| 5 | Harry H Sharp | 15 | Son | — | Iowa |
| 6 | Delbert H Sharp | 13 | Son | — | Iowa |
| 7 | Robert L Sharp | 9 | Son | — | Iowa |
| 8 | Ada P Sharp | 8 | Daughter | — | Iowa |
| 9 | Lois V Sharp | 5 | Daughter | — | Iowa |
| 10 | Bessie A Hayward | 17 | Daughter | — | Iowa |
| 11 | Betty Hayward | 1 | Granddaughter | — | Iowa |
| 12 | Grant Shives | 37 | Head | Laborer | Iowa |
| 13 | Audrey A Shives | 37 | Wife | — | Iowa |
| 14 | Harry A Shives | 15 | Son | — | Iowa |
| 15 | Gerald H Shives | 12 | Son | — | Iowa |
| 16 | Howard G Shives | 10 | Son | — | Iowa |
| 17 | Alfred L Shives | 7 | Son | — | Iowa |
| 18 | Kenneth D Shives | 5 | Son | — | Iowa |
| 19 | Lucile L Shives | 4 | Daughter | — | Iowa |
| 20 | Teddy L Shives | 1 | Son | — | Iowa |
| 21 | Philip T Brand | 49 | Head | Farmer | Iowa |
| 22 | Jennie Brand | 48 | Wife | — | Iowa |
| 23 | Daniel A Brand | 25 | Son | — | Iowa |
| 24 | Coda L Kerr | 50 | Head | Farmer | Kansas |
| 25 | Mary Kerr THIS PERSON | 44 | Wife | — | Iowa |
| 26 | Walt E Kerr | 21 | Son | Laborer | Iowa |
| 27 | Raymond A Kerr | 18 | Son | — | Iowa |
| 28 | Milo L Kerr | 15 | Son | — | Iowa |
| 29 | Samuel J Eli | 34 | Head | Laborer | Iowa |
| 30 | Mary K Eli | 32 | Wife | — | Iowa |
| 31 | Maurice L Eli | 9 | Son | — | Iowa |
| 32 | Georgia M Eli | 7 | Daughter | — | Iowa |
| 33 | Earl Bougher | 35 | Head | Laborer | Iowa |
| 34 | Mamie Bougher | 34 | Wife | — | Missouri |
| 35 | Irene Bougher | 12 | Daughter | — | Iowa |
| 36 | Bettie M Bougher | 10 | Daughter | — | Iowa |
| 37 | Helen M Bougher | 8 | Daughter | — | Iowa |
| 38 | Earl E Bougher | 5 | Son | — | Iowa |
| 39 | Burt Hewitt | 52 | Head | Laborer | Illinois |
| 40 | Luella Hewitt | 40 | Wife | — | Illinois |
| 41 | Charles L Hewitt | 17 | Son | — | Iowa |
| 42 | Joanne L Hewitt | 9 | Daughter | — | Iowa |
| 43 | William H Hewitt | 6 | Son | — | Iowa |
| 44 | Laverne M Hewitt | 3 | Daughter | — | Iowa |
| 45 | Willard E Sampson | 17 | Boarder | Laborer | Iowa |
| 46 | Earl Thickstun | 28 | Head | Farmer | Iowa |
| 47 | Rosie M Thickstun | 27 | Wife | — | Iowa |
| 48 | Vernon J Thickstun | 8 | Son | — | Iowa |
| 49 | Gerald E Thickstun | 6 | Son | — | Iowa |
| 50 | Charles G Thickstun | 4 | Son | — | 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)