JP
John Pratt — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Los Angeles, California
Our Model Tree links this John Pratt across the 1930 and 1940 US Censuses in Los Angeles, California (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 13-person household.
Age 1
b. ~1929
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Los Angeles, California |
| Surname | Pratt |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | New York |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Long Beach City |
| Est. Birth Year | ~1929 |
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.
13 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Helen Pratt | Daughter | — | 7 | ~1923 |
| Mabel Pratt | Daughter | — | 20 | ~1910 |
| Frank Pratt | Head | — | 50 | ~1880 |
| James Pratt | Son | — | 11 | ~1919 |
| Frank Pratt | Son | — | 24 | ~1906 |
| Robert Pratt | Son | — | 25 | ~1905 |
| Edward Pratt | Son | — | 3 | ~1927 |
| John Pratt | Son | — | 1 | ~1929 |
| Richard Pratt | Son | — | 10 | ~1920 |
| George Pratt | Son | — | 23 | ~1907 |
| William Pratt | Son | — | 20 | ~1910 |
| John Pratt | Son | — | 19 | ~1911 |
| Mabel Pratt | Spouse | — | 44 | ~1886 |
Census Appearances
1930
Los Angeles, …
Son, age 1
Los Angeles, California · implied b. ~1929 — 13 household members
| Surname | Pratt |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | New York |
| Mother's Birthplace | Ohio |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 11
Los-Angeles-County, California · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pratto |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 John Pratt across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Pratt
Son · 1930 · age 1 · b. ~1929 · California
★ You are viewing this record
Sibling
Helen Pratt
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Pratt
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Pratt
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Pratt
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabel Pratt
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Pratt
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Pratt
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Pratt
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Pratt
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Pratt
Sibling · 1930 · age 25
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 — Los Angeles, California
Open full size
1930 US Federal Census — Los Angeles, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel130:1177)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur Zimmerman | 40 | Head | Marble Worker | Pennsylvania |
| 2 | Lillian Zimmerman | 33 | Wife | — | New York |
| 3 | Arthur Jr. Zimmerman | 13 | Son | — | New York |
| 4 | Lillian Zimmerman | 11 | Daughter | — | New York |
| 5 | Robert Zimmerman | 6 | Son | — | California |
| 6 | Richard Zimmerman | 4 | Son | — | California |
| 7 | Donald Zimmerman | 1 | Son | — | California |
| 8 | K. Fox | 45 | Head | Gardener | Japan |
| 9 | T. Fox | 31 | Wife | — | Japan |
| 10 | S. Fox | 10 | Son | — | California |
| 11 | M. Fox | 9 | Daughter | — | California |
| 12 | H. Fox | 8 | Son | — | California |
| 13 | K. Fox | 5 | Son | — | California |
| 14 | T. Fox | 2 | Son | — | California |
| 15 | Frank Pratt | 50 | Head | — | New York |
| 16 | Mabel Pratt | 44 | Wife | — | Ohio |
| 17 | Frank Jr. Pratt | 24 | Son | Physician | New York |
| 18 | Mabel Pratt | 20 | Daughter | — | New York |
| 19 | John Pratt | 19 | Son | Stationary Engineer | New York |
| 20 | Robert Pratt | 25 | Son | Truck Driver | New York |
| 21 | George Pratt | 23 | Son | Dispatcher | New York |
| 22 | William Pratt | 20 | Son | Stationary Engineer | New York |
| 23 | James Pratt | 11 | Son | — | New York |
| 24 | Richard Pratt | 10 | Son | — | New York |
| 25 | Edward Pratt | 3 | Son | — | California |
| 26 | John Pratt THIS PERSON | 1 | Son | — | California |
| 27 | Helen Pratt | 7 | Daughter | — | New York |
| 28 | Jacob Kramer | 41 | Head | Gas Pumper | Pennsylvania |
| 29 | Ada Kramer | 38 | Wife | — | Pennsylvania |
| 30 | Jacob Jr. Kramer | 18 | Son | Truck Driver | Pennsylvania |
| 31 | Robert Kramer | 11 | Son | — | Pennsylvania |
| 32 | William Kramer | 10 | Son | — | Pennsylvania |
| 33 | Helen Kramer | 8 | Daughter | — | Pennsylvania |
| 34 | Mary Kramer | 6 | Daughter | — | Pennsylvania |
| 35 | Fred Hageman | 44 | Head | — | California |
| 36 | Alice Hageman | 55 | Wife | — | California |
| 37 | Mary Hageman | 11 | Daughter | — | California |
| 38 | Fred Jr. Hageman | 6 | Son | — | California |
| 39 | Alice Hageman | 5 | Daughter | — | California |
| 40 | John Hageman | 4 | Son | — | California |
| 41 | Robert Hageman | 2 | Son | — | California |
| 42 | William Hageman | 1 | Son | — | California |
| 43 | Helen Hageman | 0 | Daughter | — | California |
| 44 | James Hageman | 0 | Son | — | California |
| 45 | Richard Hageman | 0 | Son | — | California |
| 46 | Edward Hageman | 0 | Son | — | California |
| 47 | George Hageman | 0 | Son | — | California |
| 48 | Frank Hageman | 0 | Son | — | California |
| 49 | Arthur Hageman | 0 | Son | — | California |
| 50 | Donald Hageman | 0 | Son | — | California |
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)