RL
Robert Lee — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Robert Lee across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Harry & Mary — first a son (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Male
Son
Born: Nevada
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Lee |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Nevada |
| 1935 Residence (City) | Long Beach City |
| Additional Details | |
| Occupation | Dentist |
| Industry | Private Practice |
| Class of Worker | E |
| Hours Worked | 24 |
| Income (1939) | 450 |
| Highest Grade | C-4 |
| Birth State | Nevada |
| Birth Country | United States |
| Birthplace (normalized) | nevada |
| Occupation | Dentist |
| Township / Ward | Long Beach City |
| Est. Birth Year | ~1915 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Nancy Lee | Daughter | — | 22 | ~1918 |
| Harry Lee | Head | — | 58 | ~1882 |
| Donald Lee | Son | — | 14 | ~1926 |
| Robert Lee | Son | — | 25 | ~1915 |
| Mary Lee | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Los Angeles, …
Son, age 4
Los Angeles, California · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lee |
| Given Name | Robert H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Nevada |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | California |
| Occupation | yes |
| Industry | none |
| Birth State | Nevada |
| Birth Country | United States |
| Birthplace (normalized) | nevada |
1930
Los Angeles, …
Son, age 15
Los Angeles, California · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lee |
| Given Name | Robert S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Nevada |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | Nevada |
| Birth Country | United States |
| Birthplace (normalized) | nevada |
1940
Los-Angeles-County, California
Son, age 25
Los-Angeles-County, California · implied b. ~1915 — 5 household members
| Surname | Lee |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Nevada |
| 1935 Residence (City) | Long Beach City |
| Occupation | Dentist |
| Industry | Private Practice |
| Class of Worker | E |
| Hours Worked | 24 |
| Income (1939) | 450 |
| Highest Grade | C-4 |
| Birth State | Nevada |
| Birth Country | United States |
| Birthplace (normalized) | nevada |
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 Robert Lee across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harry Lee (~0.92 confidence) and mother Mary Lee (~0.92 confidence) and mother Lillie Lee (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Lee
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Mary Lee
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Lillie Lee
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Lee
Son · 1940 · age 25 · b. ~1915 · California
★ You are viewing this record
Sibling
Nancy Lee
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Lee
Sibling · 1940 · age 14
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-t0627-00369-00719)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Vord | None | — | — | — |
| 42 | William L. Witter | 32 | Head | Printer 1C | Iowa |
| 43 | Elizabeth N. Witter | 35 | Wife | — | England |
| 44 | Lebarena E. Perry | 26 | Head | Machinist Mate 1C | Tennessee |
| 45 | June R. Perry | 25 | Wife | — | California |
| 46 | Duane E. Perry | 3 | Son | — | California |
| 47 | Roberta J. Perry | 1 | Daughter | — | California |
| 48 | Anthony S. Leahy | 38 | Head | Chief Radioman | Michigan |
| 49 | Truda R. Leahy | 38 | Wife | — | Oklahoma |
| 50 | Grady E. Perry | 19 | Step son | New Worker | Oklahoma |
| 51 | Robel Jean Perry | 17 | Daughter | — | Oklahoma |
| 52 | Clarence F. Preahau | 45 | Head | Assistant Steward | Utah |
| 53 | Ella E. Preahau | 43 | Wife | — | Utah |
| 54 | Marilyn E. Preahau | 17 | Daughter | — | Utah |
| 55 | Ralph K. Preahau | 14 | Son | — | Utah |
| 56 | Jeannine J. Preahau | 9 | Daughter | — | Utah |
| 57 | Harley S. Bennett | 8 | Head | — | Illinois |
| 58 | Mary A. Bennett | 75 | Wife | — | Minnesota |
| 59 | James M. Buschman | 34 | Head | Shoe Salesman | Wisconsin |
| 60 | Lilly Mae Buschman | 31 | Wife | Waitress | Iowa |
| 61 | Nora A. Jacobs | 23 | Head | Office Clerk | Nebraska |
| 62 | Fred O. Schlueter | 23 | Lodger | Steam Railroad | Nebraska |
| 63 | Mary B. Timney | 43 | Head | — | California |
| 64 | Allen D. Timney | 21 | Son | Gun Smith | Arizona |
| 65 | Grace Holmes | 37 | Housekeeper | Housekeeper | Kentucky |
| 66 | W. E. Bailey | 45 | Lodger | Salesman | Indiana |
| 67 | Harry H. Lee | 58 | Head | Pumper | Wisconsin |
| 68 | Mary A. Lee | 55 | Wife | — | California |
| 69 | Robert A. Lee THIS PERSON | 25 | Son | Dentist | Nevada |
| 70 | Nancy E. Lee | 22 | Daughter | — | Nevada |
| 71 | Donald V. Lee | 14 | Son | — | California |
| 72 | Elsie M. Tipping | 48 | Head | Registrar | California |
| 73 | Rosellen A. Tipping | 17 | Daughter | — | California |
| 74 | Willene G. Tipping | 13 | Daughter | — | California |
| 75 | Virginia J. Tipping | 11 | Daughter | — | California |
| 76 | Edythe R. Nicholson | 32 | Sister | New Worker | California |
| 77 | Colton C. Tipping | 24 | Son | Fireman 1C | California |
| 78 | Harry E. Beckman | 51 | Head | Cook | California |
| 79 | Mollie D. Beckman | 52 | Wife | — | Kansas |
| 80 | Bernard E. Beckman | 24 | Son | Commercial Fisherman | California |
Related Census Records
Pedigree Summary
Robert + 2 siblings
Gen 1 · 3 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)