MK
Mary Keller — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Lake, Indiana
Our Model Tree links this Mary Keller across the 1930 and 1940 US Censuses in Lake, Indiana (XGBoost, ~Confirmed) — first a spouse (b.~1880), then head of a 7-person household.
Age 50
b. ~1880
Female
Spouse
Born: Czechoslovakia
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Lake, Indiana |
| Surname | Keller |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Czechoslovakia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 18 |
| Father's Birthplace | Czechoslovakia |
| Mother's Birthplace | Czechoslovakia |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | Slovak |
| Veteran | No |
| Birth Country | Czechoslovakia |
| Birthplace (normalized) | czechoslovakia |
| Township / Ward | City Whiting |
| Est. Birth Year | ~1880 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Helen Keller | Daughter | — | 16 | ~1914 |
| Elizabeth Keller | Daughter | — | 11 | ~1919 |
| John Keller | Head | — | 55 | ~1875 |
| John Keller | Son | — | 23 | ~1907 |
| George Keller | Son | — | 19 | ~1911 |
| Andrew Keller | Son | — | 13 | ~1917 |
| Mary Keller | Spouse | — | 50 | ~1880 |
Census Appearances
1930
Lake, Indiana
Spouse, age 50
Lake, Indiana · implied b. ~1880 — 7 household members
| Surname | Keller |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Czechoslovakia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 18 |
| Father's Birthplace | Czechoslovakia |
| Mother's Birthplace | Czechoslovakia |
| Can Read/Write | Yes |
| Mother Tongue | Slovak |
| Veteran | No |
| Birth Country | Czechoslovakia |
| Birthplace (normalized) | czechoslovakia |
1940
Lake-County, Indiana
Head, age 57
Lake-County, Indiana · implied b. ~1883 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kellar |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Widowed |
| Birthplace | Czechoslovakia |
| 1935 Residence (City) | Whiting City |
| 1935 Residence (County) | Lake |
| Naturalization Status | Alien |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth Country | Czechoslovakia |
| Birthplace (normalized) | czechoslovakia |
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 Keller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Keller
Spouse · 1930 · age 50 · b. ~1880 · Indiana
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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 — Lake, Indiana
Open full size
1930 US Federal Census — Lake, Indiana
Page Contents
50 people indexed on this census page (ia:1930:indianacensus00reel603:0218)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Johanna Glad | 47 | Wife | — | Czechoslovakia |
| 52 | Joseph Kollada | 28 | Head | Labor | Czechoslovakia |
| 53 | Theresa Kollada | 27 | Wife | — | Czechoslovakia |
| 54 | Helen Kollada | 3 | Daughter | — | Indiana |
| 55 | John Kollada | 0 | Son | — | Indiana |
| 56 | Vincent Matlak | 35 | Head | Labor | Czechoslovakia |
| 57 | Sophia Matlak | 35 | Wife | — | Czechoslovakia |
| 58 | Mary Matlak | 10 | Step daughter | — | Illinois |
| 59 | Julia Matlak | 8 | Daughter | — | Illinois |
| 60 | Sophia Matlak | 2 | Daughter | — | Illinois |
| 61 | Anna Dacy | 65 | Head | — | Ireland |
| 62 | Annie Lata | 63 | Head | — | Czechoslovakia |
| 63 | Stephen Lata | 24 | Son | Electrician | Indiana |
| 64 | Urban Lata | 20 | Son | Laborer | Indiana |
| 65 | Lata | None | — | — | — |
| 66 | Eddie Mcduffin | 26 | Head | Laborer | Kentucky |
| 67 | Lottie Mcduffin | 28 | Wife | — | Kentucky |
| 68 | Blanche V. Mcduffin | 8 | Daughter | — | Kentucky |
| 69 | Louise Mcduffin | 6 | Daughter | — | Kentucky |
| 70 | Eager Miller | 26 | Head | Machinist | Alabama |
| 71 | Zula Miller | 24 | Wife | — | Alabama |
| 72 | Billy Hugh Miller | 3 | Son | — | Georgia |
| 73 | Thelma K. Miller | 1 | Daughter | — | Alabama |
| 74 | Hugh B. Miller | 22 | Brother | Laborer | Alabama |
| 75 | Gaston Miller | 23 | Cousin | — | Alabama |
| 76 | Henry Hill | 24 | Head | Mason | Indiana |
| 77 | Ola Hill | 19 | Wife | — | Indiana |
| 78 | Richard L. Hill | 1 | Son | — | Indiana |
| 79 | Walter Harrell | 44 | Father | Laborer | Indiana |
| 80 | James L. Bratcher | 48 | Head | Mason | Kentucky |
| 81 | Martha E. Bratcher | 32 | Wife | — | Kentucky |
| 82 | William Bratcher | 21 | Son | Laborer | Kentucky |
| 83 | Lee Hilbert Bratcher | 19 | Son | — | Kentucky |
| 84 | Nealie Evans | 26 | Head | Laborer | Kentucky |
| 85 | Ora Evans | 17 | Wife | — | Kentucky |
| 86 | Pauline Bratcher | 10 | Niece | — | Kentucky |
| 87 | John Gresko | 34 | Head | — | Czechoslovakia |
| 88 | Sophie Gresko | 27 | Wife | Janitress | Czechoslovakia |
| 89 | Joseph J. Gresko | 7 | Son | — | Indiana |
| 90 | Lorraine T. Gresko | 5 | Daughter | — | Indiana |
| 91 | Helen Kochan | 44 | Assistant | — | Czechoslovakia |
| 92 | — | None | — | — | — |
| 93 | John Keller | 55 | Head | Laborer | Czechoslovakia |
| 94 | Mary Keller THIS PERSON | 50 | Wife | — | Czechoslovakia |
| 95 | John Keller | 23 | Son | Boiler Maker | Indiana |
| 96 | George Keller | 19 | Son | Laborer | Indiana |
| 97 | Helen Keller | 16 | Daughter | — | Indiana |
| 98 | Andrew Keller | 13 | Son | — | Indiana |
| 99 | Elizabeth Keller | 11 | Daughter | — | Indiana |
| 100 | Anna Becher | 36 | Head | Janitress | Indiana |
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)