JL
John Lowry — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Mateo-County, California
Our Model Tree links this John Lowry across the 1930 and 1940 US Censuses in San-Mateo-County, California (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 5-person household.
Age 17
b. ~1923
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Mateo-County, California |
| Surname | Lowry |
| Given Name | John A. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Hillsborough Town |
| 1935 Residence (County) | San Mateo |
| Additional Details | |
| Highest Grade | H 3 |
| 1935 Residence | Same house |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Hillsborough Town |
| Est. Birth Year | ~1923 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Robert Lowry | Son | — | 7 | ~1933 |
| Thomas Lowry | Son | — | 16 | ~1924 |
| John Lowry | Son | — | 17 | ~1923 |
| Adam Lowry | Head | — | 55 | ~1885 |
| Katharine Lowry | Spouse | — | 45 | ~1895 |
Census Appearances
1930
San Mateo, …
Son, age 7
San Mateo, California · implied b. ~1923 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lowry |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | No. Ireland |
| Mother's Birthplace | No. Ireland |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Mateo-County, California
Son, age 17
San-Mateo-County, California · implied b. ~1923 — 5 household members
| Surname | Lowry |
| Given Name | John A. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Hillsborough Town |
| 1935 Residence (County) | San Mateo |
| Highest Grade | H 3 |
| 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 Lowry across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Lowry
Son · 1940 · age 17 · b. ~1923 · California
★ You are viewing this record
Sibling
Robert Lowry
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Lowry
Sibling · 1940 · age 16
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
1940 US Federal Census — San-Mateo-County, California
Open full size
1940 US Federal Census — San-Mateo-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00330-00046)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold L. Jr Vmack | 27 | Head | Photographer | New York |
| 2 | Marie Vmack | 26 | Wife | Saleslady | France |
| 3 | Harold L. Iii Vmack | 5 | Son | — | California |
| 4 | Sheila Vmack | 1 | daughter | — | California |
| 5 | Louvania Owens | 45 | servant | Servant | Mississippi |
| 6 | Vernon S. Bernstein | 41 | Head | President | California |
| 7 | Kathryn Bernstein | 37 | wife | — | California |
| 8 | Joan L. Bernstein | 9 | daughter | — | California |
| 9 | Grant S. Bernstein | 8 | son | — | California |
| 10 | Dagnie Telson | 29 | servant | Servant | New Jersey |
| 11 | Bradford M. Melvin | 45 | Head | Lawyer | California |
| 12 | Esther L. Melvin | 43 | wife | — | California |
| 13 | Mary Louise Melvin | 17 | daughter | — | California |
| 14 | Bradford M. Jr Melvin | 10 | son | — | California |
| 15 | Mina Flaviano | 39 | servant | Genl Housework | Philippines |
| 16 | Ernest Moreck | 49 | Head | President | Denmark |
| 17 | Helene Moreck | 43 | wife | — | Nebraska |
| 18 | George W. Kleiser | 65 | Head | President | California |
| 19 | Maude N. Kleiser | 60 | wife | — | California |
| 20 | Jack E. Kleiser | 27 | son | Research | Oregon |
| 21 | Caroline C. O'Neil | 80 | mother in law | — | Nevada |
| 22 | Carolla Gramm | 45 | servant | Upstairs Maid | Germany |
| 23 | On Gin | 58 | servant | Cook | California |
| 24 | James Triner | 46 | Head | Chauffeur | Illinois |
| 25 | Magda O. Triner | 47 | wife | — | Sweden |
| 26 | Joseph C. Flowers | None | Head | — | — |
| 27 | Inez Flowers | None | wife | — | — |
| 28 | Howard Hall | None | servant | — | — |
| 29 | Adam Lowry | 55 | Head | Gardener | No. Ireland |
| 30 | Katharine C. Lowry | 45 | wife | — | So. Ireland |
| 31 | John A. Lowry THIS PERSON | 17 | son | — | California |
| 32 | Thomas J. Lowry | 16 | son | — | California |
| 33 | Robert C. Lowry | 7 | son | — | California |
| 34 | William P. Jr Fuller | 51 | Head | President | California |
| 35 | Adaline W. Fuller | 51 | wife | — | California |
| 36 | John M. Fuller | 22 | son | — | California |
| 37 | Robert H. Fuller | 20 | half brother | — | California |
| 38 | James S. Jr Brown | 17 | nephew | — | New Jersey |
| 39 | Adalina H. Brown | 14 | niece | — | California |
| 40 | Kathryn P. Shanahan | 58 | servant | Housekeeper | California |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)