KD
Katherine Davis — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Katherine Davis across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 11-person household.
Age 42
b. ~1888
Female
Head
Born: Maryland
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Davis |
| Given Name | Katherine |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Veteran | 4200 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1888 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Katherine | Age | Birth yr |
|---|---|---|---|---|
| Katherine Davis | Head | — | 42 | ~1888 |
| Louis Davis | Son | — | 7 | ~1923 |
| Martha Davis | Daughter | — | 19 | ~1911 |
| Mildred Davis | Daughter | — | 13 | ~1917 |
| Louis Davis | Other | — | 71 | ~1859 |
| Katherine Davis | Daughter | — | 17 | ~1913 |
| Margaret Davis | Daughter | — | 21 | ~1909 |
| Anna Davis | Other | — | 41 | ~1889 |
| Evelyn Davis | Daughter | — | 11 | ~1919 |
| Dorothy Davis | Daughter | — | 15 | ~1915 |
| Ruth Davis | Daughter | — | 9 | ~1921 |
Census Appearances
1930
Baltimore, Maryland
Head, age 42
Baltimore, Maryland · implied b. ~1888 — 11 household members
| Surname | Davis |
| Given Name | Katherine |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Veteran | 4200 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 52
Baltimore-City-County, Maryland · implied b. ~1888 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Kathryn |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Katherine Davis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Katherine Davis
Head · 1930 · age 42 · b. ~1888 · Maryland
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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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus848unit:0880)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louis Homer | 38 | Head | Salesman | Maryland |
| 2 | Beatrice Homer | 36 | Wife | — | Poland |
| 3 | Louis Jr. Homer | 11 | Son | — | Maryland |
| 4 | Garrett L. Ambrose | 27 | Head | Soldier | North Carolina |
| 5 | Susan Mae Ambrose | 19 | Wife | — | Maryland |
| 6 | Katherine Davis THIS PERSON | 42 | Head | — | Maryland |
| 7 | Margaret Davis | 21 | Daughter | — | Maryland |
| 8 | Martha Davis | 19 | Daughter | — | Maryland |
| 9 | Katherine Davis | 17 | Daughter | — | Maryland |
| 10 | Dorothy Davis | 15 | Daughter | — | Maryland |
| 11 | Mildred Davis | 13 | Daughter | — | Maryland |
| 12 | Evelyn Davis | 11 | Daughter | — | Maryland |
| 13 | Ruth Davis | 9 | Daughter | — | Maryland |
| 14 | Louis Davis | 7 | Son | — | Maryland |
| 15 | Louis Davis | 71 | Father-in-law | — | Maryland |
| 16 | Anna Davis | 41 | Sister-in-law | — | Maryland |
| 17 | Theodore Tudajewski | 60 | Head | — | Poland |
| 18 | Mary Tudajewski | 55 | Wife | — | Poland |
| 19 | Walter Kaczmarek | 40 | Head | — | Poland |
| 20 | Stella Kaczmarek | 38 | Wife | — | Maryland |
| 21 | Aurelia Kaczmarek | 16 | Daughter | — | Maryland |
| 22 | Alice Kaczmarek | 14 | Daughter | — | Maryland |
| 23 | Edward Kaczmarek | 12 | Son | — | Maryland |
| 24 | Robert Kaczmarek | 10 | Son | — | Maryland |
| 25 | Hubert Kaczmarek | 8 | Son | — | Maryland |
| 26 | Dominick Pierson | 40 | Head | — | Maryland |
| 27 | Irene Pierson | 23 | Wife | — | Maryland |
| 28 | Alice Pierson | 2 | Daughter | — | Maryland |
| 29 | John Pierson | 1 | Son | — | Maryland |
| 30 | Marie Marzola | 42 | Head | — | Maryland |
| 31 | Raymond Marzola | 22 | Head | — | Maryland |
| 32 | Richard Grodum | 32 | Head | — | Maryland |
| 33 | Florence Grodum | 26 | Wife | — | Maryland |
| 34 | Richard Grodum | 6 | Son | — | Maryland |
| 35 | Thelma Grodum | 5 | Daughter | — | Maryland |
| 36 | Gordon Grodum | 2 | Son | — | Maryland |
| 37 | Laura Kaminska | 60 | Head | — | Germany |
| 38 | Laura Kaminska | 25 | Daughter | — | Maryland |
| 39 | Steve Kaminski | 43 | Head | — | Poland |
| 40 | Marion Kaminski | 21 | Son | — | Maryland |
| 41 | Andrew Czajkowski | 54 | Head | Press Feeder | Poland |
| 42 | Lillian Czajkowski | 17 | Daughter | Laborer | Maryland |
| 43 | Marie Czajkowski | 15 | Daughter | — | Maryland |
| 44 | Helen Czajkowski | 12 | Daughter | — | Maryland |
| 45 | Stella Czajkowski | 8 | Daughter | — | Maryland |
| 46 | Richard Czajkowski | 6 | Son | — | Maryland |
| 47 | Hugh Brown | 40 | Head | — | Maryland |
| 48 | Anne T. Brown | 41 | Wife | — | Maryland |
| 49 | Hugh L. Brown | 17 | Son | — | Maryland |
| 50 | Joseph E. Brown | 15 | Son | — | Maryland |
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)