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John Mcdonnell — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Los Angeles, California
Our Model Tree links this John Mcdonnell across the 1930 and 1940 US Censuses in Los Angeles, California (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 7-person household.
Age 0
b. ~1930
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Los Angeles, California |
| Surname | McDonnell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1930 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Patricia Mcdonnell | Daughter | — | 10 | ~1920 |
| Kathleen Mcdonnell | Daughter | — | 8 | ~1922 |
| William Mcdonnell | Son | — | 12 | ~1918 |
| Mary Mcdonnell | Head | — | 44 | ~1886 |
| Virginia Mcdonnell | Daughter | — | 4 | ~1926 |
| Mary Mcdonnell | Daughter | — | 17 | ~1913 |
| John Mcdonnell | Son | — | ~1930 |
Census Appearances
1930
Los Angeles, …
Son, age
Los Angeles, California · implied b. ~1930 — 7 household members
| Surname | McDonnell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 10
Los-Angeles-County, California · implied b. ~1930 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| 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 Mcdonnell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcdonnell
Son · 1930 · age 0 · b. ~1930 · California
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Sibling
William Mcdonnell
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcdonnell
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Mcdonnell
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Mcdonnell
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Mcdonnell
Sibling · 1930 · age 10
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:californiacensus00reel165:0016)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | George Metz | 27 | Head | Laborer | England |
| 52 | Kate Metz | 27 | Wife | None | Ireland-Free State |
| 53 | Albert Metz | 27 | Son | Laborer | California |
| 54 | George Metz | 3 | Son | None | California |
| 55 | Mabel Evans | 75 | Head | None | Virginia |
| 56 | Mabel Evans | 42 | Daughter | Clerk | Ohio |
| 57 | Vivian Jones | 30 | Head | Nurse | Oregon |
| 58 | Barbara Jones | 6 | Daughter | None | Oregon |
| 59 | William Jones | 3 | Son | None | Oregon |
| 60 | Anna Sams | 21 | Roomer | Stenographer | Indiana |
| 61 | John Woods | 24 | Head | Machinist | Ohio |
| 62 | Emily Woods | 23 | Wife | None | Ohio |
| 63 | John Woods | 1 | Son | None | Pennsylvania |
| 64 | Fred Reams | 27 | Head | Telephone | California |
| 65 | Zona Reams | 27 | Wife | None | California |
| 66 | Michael Lankvitz | 36 | Head | Truck Driver | Lithuania |
| 67 | Mabel Lankvitz | 39 | Wife | None | Michigan |
| 68 | Frank M. Meyers | 24 | Head | Fireman | California |
| 69 | Agnes Meyers | 24 | Wife | None | California |
| 70 | Frank A. Meyers | 5 | Son | None | California |
| 71 | Marietta Meyers | 3 | Daughter | None | California |
| 72 | Mary Mcdonnell | 44 | Head | Surveyor | Minnesota |
| 73 | Mary Mcdonnell | 17 | Daughter | None | Ohio |
| 74 | William Mcdonnell | 12 | Son | None | San Salvador |
| 75 | Patricia Mcdonnell | 10 | Daughter | None | California |
| 76 | Kathleen Mcdonnell | 8 | Daughter | None | California |
| 77 | Virginia Mcdonnell | 4 | Daughter | None | California |
| 78 | John Mcdonnell THIS PERSON | 0 | Son | None | California |
| 79 | Paul Beltram | 32 | Head | Salesman | Michigan |
| 80 | Edith Beltram | 21 | Wife | None | Michigan |
| 81 | Gladys Beltram | 1 | Daughter | None | Minnesota |
| 82 | Glenn Mckay | 41 | Head | Yardsman | Illinois |
| 83 | Elizabeth Mckay | 34 | Wife | None | California |
| 84 | Frank R. Mckay | 14 | Son | None | California |
| 85 | Robert Mckay | 12 | Son | None | California |
| 86 | Hulda Windenheimer | 65 | Head | None | Germany |
| 87 | Cornelia Tomenson | 71 | Head | None | Connecticut |
| 88 | Robert W. Tomenson | 39 | Son | Salesman | Connecticut |
| 89 | John E. Tomenson | 34 | Son | Instructor | Connecticut |
| 90 | Jeanette Reese | 36 | Daughter | Teacher | Connecticut |
| 91 | John H. Reese | 14 | Grandson | None | Connecticut |
| 92 | Robert B. Tomenson | 12 | Grandson | None | Connecticut |
| 93 | Jack Juggle | 73 | Head | Examiner | Oregon |
| 94 | Florence Juggle | 56 | Wife | None | Oregon |
| 95 | Virginia Juggle | 21 | Daughter | None | California |
| 96 | Carl Benson | 26 | Head | Teacher | Kansas |
| 97 | Velva Benson | 22 | Wife | Nurse | California |
| 98 | Verna Sheldon | 25 | Roomer | None | California |
| 99 | John Rowell | 27 | Head | Truck Driver | Idaho |
| 100 | Josephine Rowell | 22 | Wife | Ball Maker | Missouri |
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)