WM
William Montgomery — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this William Montgomery across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Francis & Gertrude — first a son (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Montgomery |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1916 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Francis Montgomery | Head | — | 59 | ~1881 |
| Helen Clemens | Other | — | 58 | ~1882 |
| Victor Montgomery | Son | — | 31 | ~1909 |
| William Montgomery | Son | — | 24 | ~1916 |
| Francis Montgomery | Son | — | 25 | ~1915 |
| Gertrude Montgomery | Spouse | — | 59 | ~1881 |
Census Appearances
1920
Los Angeles, …
Son, age 4
Los Angeles, California · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Montgomery |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Kansas |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Los Angeles, …
Son, age 15
Los Angeles, California · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Montgomery |
| Given Name | William P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Kansas |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 24
Los-Angeles-County, California · implied b. ~1916 — 6 household members
| Surname | Montgomery |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Class of Worker | 0 |
| Highest Grade | H 4 |
| 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 William Montgomery across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Francis Montgomery (~0.92 confidence) and mother Gertrude Montgomery (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Francis Montgomery
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Gertrude Montgomery
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Montgomery
Son · 1940 · age 24 · b. ~1916 · California
★ You are viewing this record
Sibling
Victor Montgomery
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Montgomery
Sibling · 1940 · 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
1940 US Federal Census — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00404-00101)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Francis Montgomery | 59 | Head | — | Kansas |
| 2 | Gertrude Montgomery | 59 | Wife | — | California |
| 3 | Victor Montgomery | 31 | Son | Office Clerk | California |
| 4 | Francis Montgomery | 25 | Son | Office Clerk | California |
| 5 | William Montgomery THIS PERSON | 24 | Son | — | California |
| 6 | Helen Clemens | 58 | Cousin | — | New York |
| 7 | John Breen | 72 | Head | Gardener | Vermont |
| 8 | Sherman Morton | 73 | Head | — | Ohio |
| 9 | Mattie Morton | 69 | Wife | — | Ohio |
| 10 | Reba Morton | 38 | Daughter | — | Ohio |
| 11 | Roland Reed | 45 | Head | Producer | New York |
| 12 | Dorothy Reed | 26 | Wife | — | Illinois |
| 13 | Roberta Reed | 1 | Daughter | — | California |
| 14 | Laura Hight | 35 | Servant | Servant | Texas |
| 15 | Georgia Hale | 60 | Servant | Servant | Texas |
| 16 | Gabriel Segall | 45 | Head | Physician | Latvia |
| 17 | Else Segall | 46 | Wife | — | Germany |
| 18 | Ralph Segall | 15 | Son | — | California |
| 19 | Felix Mcginnis | 29 | Head | Attorney At Law | California |
| 20 | Maizelle Mcginnis | 24 | Wife | — | California |
| 21 | Michael Mcginnis | 2 | Son | — | California |
| 22 | Sharron Mcginnis | 1 | Daughter | — | California |
| 23 | Agnes Sullivan | 32 | Servant | Nurse | Illinois |
| 24 | Victoria Hodell | 47 | Servant | Servant | Sweden |
| 25 | Hans Oppenheim | 45 | Head | — | New York |
| 26 | Eva Oppenheim | 41 | Wife | — | Ohio |
| 27 | Emil Diosana | 35 | Servant | Servant | Philippines |
| 28 | Irma Peterson | 45 | Servant | Servant | Sweden |
| 29 | Howard Cutler | 60 | Head | Oil Broker | Indiana |
| 30 | Louise Cutler | 57 | Wife | — | Indiana |
| 31 | Grace Payne | 51 | Sister-in-law | — | Indiana |
| 32 | Ruth Payne | 48 | Sister-in-law | — | Indiana |
| 33 | Donald Payne | 20 | Nephew | — | Indiana |
| 34 | Clyde Allen | 28 | Servant | Servant | Texas |
| 35 | George Buzza | 55 | Head | Greeting Card Mfg | Iowa |
| 36 | Jane Buzza | 41 | Wife | — | Iowa |
| 37 | Windsor Buzza | 15 | Son | — | California |
| 38 | Mary Meade | 45 | Sister-in-law | — | Iowa |
| 39 | Lucille Meade | 18 | Niece | — | Iowa |
| 40 | Laura Fallow | 45 | Servant | Servant | Colorado |
Pedigree Summary
William + 2 siblings
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)