MC
Mary Caldwell — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Wyandotte, Kansas
Our Model Tree links this Mary Caldwell across the 1920 and 1930 US Censuses in Wyandotte, Kansas (XGBoost, ~Confirmed) — first a daughter (b.~1907), then head of a 10-person household.
Age 23
b. ~1907
Female
Daughter
Born: Kansas
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Wyandotte, Kansas |
| Surname | Caldwell |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Occupation | Billing Clerk |
| Industry | Pump Mfg |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Billing Clerk |
| Township / Ward | Wyandotte Township Part Of |
| Est. Birth Year | ~1907 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Agnes Caldwell | Daughter | — | 16 | ~1914 |
| Mary Caldwell | Daughter | — | 23 | ~1907 |
| James Caldwell | Head | — | 54 | ~1876 |
| Mary Caldwell | Other | — | 51 | ~1879 |
| Aloysius Caldwell | Son | — | 17 | ~1913 |
| John Caldwell | Son | — | 19 | ~1911 |
| Patrick Caldwell | Son | — | 12 | ~1918 |
| William Caldwell | Son | — | 25 | ~1905 |
| James Caldwell | Son | — | 21 | ~1909 |
| Joseph Caldwell | Son | — | 14 | ~1916 |
Census Appearances
1920
Wyandotte, Kansas
Daughter, age 13
Wyandotte, Kansas · implied b. ~1907 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | Mary S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Wyandotte, Kansas
Daughter, age 23
Wyandotte, Kansas · implied b. ~1907 — 10 household members
| Surname | Caldwell |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | Billing Clerk |
| Industry | Pump Mfg |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Caldwell across 2 US Census years (1920 and 1930) in Wyandotte, Kansas, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Caldwell
Daughter · 1930 · age 23 · b. ~1907 · Kansas
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Sibling
John Caldwell
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Caldwell
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Caldwell
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Caldwell
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Caldwell
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Caldwell
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Aloysius Caldwell
Sibling · 1930 · age 17
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 — Wyandotte, Kansas
Open full size
1930 US Federal Census — Wyandotte, Kansas
Page Contents
50 people indexed on this census page (ia:1930:15thcensus726usce:0976)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nelson C. Niggins | 30 | Head | Switchman | Kansas |
| 2 | Gladys Niggins | 27 | Wife-H | — | Illinois |
| 3 | Billie Niggins | 4 | Son | — | Kansas |
| 4 | Shirley Niggins | 2 | Daughter | — | Kansas |
| 5 | John Kraft | 42 | Head | Road Overseer | Missouri |
| 6 | Frances Kraft | 24 | Wife-H | — | Missouri |
| 7 | Charles Kraft | 4 | Son | — | Kansas |
| 8 | John Kraft | 2 | Son | — | Kansas |
| 9 | Harry Stritman | 70 | Lodger | — | Luxemburg |
| 10 | George Stritman | 33 | Lodger | Laborer | Missouri |
| 11 | Ray Myers | 32 | Head | Brakeman | Illinois |
| 12 | Beulah Myers | 21 | Wife | Dressmaker | Kansas |
| 13 | Charles Myers | 38 | Brother | Laborer | Illinois |
| 14 | Violet Myers | 30 | Sister-in-law | — | Illinois |
| 15 | Florine Myers | 6 | Niece | — | Michigan |
| 16 | Wayne E. Myers | 2 | Nephew | — | Illinois |
| 17 | John J. Grueninger | 65 | Head | Coppersmith | Missouri |
| 18 | Emma A. Grueninger | 60 | Wife-H | — | New York |
| 19 | Ernest H. Rodekopf | 68 | Head | Farmer | Germany |
| 20 | Edna Rodekopf | 40 | Daughter | — | Kansas |
| 21 | Elizabeth A. Sparks | 42 | Daughter | Teacher | Kansas |
| 22 | John Engler | 53 | Head | — | Germany |
| 23 | Mary Engler | 50 | Wife-H | — | Austria |
| 24 | Howard H. Porter | 39 | Head | Milker | New York |
| 25 | Pearl Porter | 38 | Wife-H | — | Kansas |
| 26 | Ruth L. Porter | 10 | Daughter | — | Kansas |
| 27 | Minnie B. Porter | 8 | Daughter | — | Kansas |
| 28 | Howard R. Porter | 5 | Son | — | Kansas |
| 29 | Joseph Porter | 4 | Son | — | Kansas |
| 30 | Virginia M. Porter | 2 | Daughter | — | Kansas |
| 31 | Lila Porter | 0 | Daughter | — | Kansas |
| 32 | Richard Carr | 83 | Father-in-law | — | Missouri |
| 33 | Margaret E. Carr | 78 | Mother-in-law | — | Missouri |
| 34 | James Caldwell | 54 | Head | Plumbing Contractor | Missouri |
| 35 | Mary A. Caldwell | 51 | Wife-H | — | Missouri |
| 36 | William S. Caldwell | 25 | Son | Salesman | Kansas |
| 37 | Mary H. Caldwell THIS PERSON | 23 | Daughter | Billing Clerk | Kansas |
| 38 | James P. Caldwell | 21 | Son | Apprentice Plumber | Kansas |
| 39 | John J. Caldwell | 19 | Son | Apprentice Plumber | Kansas |
| 40 | Aloysius Caldwell | 17 | Son | — | Kansas |
| 41 | Agnes A. Caldwell | 16 | Daughter | — | Kansas |
| 42 | Joseph Caldwell | 14 | Son | — | Kansas |
| 43 | Patrick Caldwell | 12 | Son | — | Kansas |
| 44 | Archie H. Johnson | 32 | Head | Switchman | Georgia |
| 45 | Marie Johnson | 34 | Wife-H | — | Kansas |
| 46 | James Johnson | 13 | Daughter | — | Kansas |
| 47 | Harold Johnson | 10 | Son | — | Kansas |
| 48 | Marjorie Johnson | 9 | Daughter | — | Kansas |
| 49 | Dora Delosier | 37 | Head-H | Waitress | Kansas |
| 50 | Herman Mccoy | 14 | Brother | Newsboy | Kansas |
Related Census Records
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)