RL
Robert Lucas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Erie-County, New York
Our Model Tree links this Robert Lucas across the 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 13-person household.
Age 14
b. ~1926
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, New York |
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | City of Buffalo |
| 1935 Residence (County) | Erie |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | City Of Buffalo |
| Est. Birth Year | ~1926 |
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 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Richard Lucas | Son | — | 9 | ~1931 |
| Thomas Lucas | Head | — | 37 | ~1903 |
| Frank Lucas | Other | — | 67 | ~1873 |
| Arthur Lucas | Son | — | 6 | ~1934 |
| Thomas Lucas | Son | — | 15 | ~1925 |
| Loretta Lucas | Daughter | — | 11 | ~1929 |
| Francis Lucas | Son | — | 8 | ~1932 |
| Loretta Lucas | Spouse | — | 36 | ~1904 |
| Olivera Lucas | Daughter | — | 11 | ~1929 |
| Charlotte Lucas | Daughter | — | 3 | ~1937 |
| Audrey Lucas | Daughter | — | 2 | ~1938 |
| Robert Lucas | Son | — | 14 | ~1926 |
| Marion Lucas | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Erie, New …
Son, age 4
Erie, New York · implied b. ~1926 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Erie-County, New …
Son, age 14
Erie-County, New York · implied b. ~1926 — 13 household members
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | City of Buffalo |
| 1935 Residence (County) | Erie |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Lucas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Lucas
Son · 1940 · age 14 · b. ~1926 · New York
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Sibling
Loretta Lucas
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Audrey Lucas
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Lucas
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Lucas
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Lucas
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Lucas
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Lucas
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Olivera Lucas
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Lucas
Sibling · 1940 · age 9
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 — Erie-County, New York
Open full size
1940 US Federal Census — Erie-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02831-00479)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mabel Proffitt | 13 | Boarder | — | New York |
| 42 | Seraphino Serafino | 57 | Head | Paper-Hanger | Italy |
| 43 | Mary Serafino | 54 | Wife | — | Italy |
| 44 | Edwin Dean | 32 | Head | Retail Automobile | Michigan |
| 45 | Anne Dean | 28 | Wife | — | New York |
| 46 | Dennis Dean | 7 | Son | — | New York |
| 47 | Edward Monroe | 23 | Head | Mechanic | New York |
| 48 | Charlotte Monroe | 19 | Wife | — | New York |
| 49 | Diane Monroe | 0 | Daughter | — | New York |
| 50 | Joseph Hardy | 33 | Head | Tool Grinder | New York |
| 51 | Ellen Hardy | 32 | Wife | — | New York |
| 52 | Joan Hardy | 12 | Daughter | — | New York |
| 53 | Eugene Hardy | 8 | Son | — | New York |
| 54 | Lawrence Mercer | 41 | Head | Tire Salesman | Canada-English |
| 55 | Dorothy Mercer | 39 | Wife | — | Pennsylvania |
| 56 | William Zimmerman | 51 | Head | Salesman | New York |
| 57 | Martha Prinz | 42 | Lodger | — | Germany |
| 58 | John H. Powell | 70 | Head | Electrician | Ireland |
| 59 | Chester Duncan | 50 | Head | Grocer | New York |
| 60 | Mary Duncan | 49 | Wife | — | New York |
| 61 | George Duncan | 22 | Son | Printer | New York |
| 62 | Rita Duncan | 21 | Daughter | — | New York |
| 63 | Ethel Duncan | 19 | Daughter | Domestic | New York |
| 64 | James Duncan | 17 | Son | New Worker | New York |
| 65 | Joseph Duncan | 12 | Son | — | New York |
| 66 | Thomas Lucas | 37 | Head | Laborer | New York |
| 67 | Loretta Lucas | 36 | Wife | — | New York |
| 68 | Marion Lucas | 17 | Daughter | — | New York |
| 69 | Thomas Lucas | 15 | Son | — | New York |
| 70 | Robert Lucas THIS PERSON | 14 | Son | — | New York |
| 71 | Loretta Lucas | 11 | Daughter | — | New York |
| 72 | Olivera Lucas | 11 | Daughter | — | New York |
| 73 | Richard Lucas | 9 | Son | — | New York |
| 74 | Francis Lucas | 8 | Son | — | New York |
| 75 | Arthur Lucas | 6 | Son | — | New York |
| 76 | Charlotte Lucas | 3 | Daughter | — | New York |
| 77 | Audrey Lucas | 2 | Daughter | — | New York |
| 78 | Frank Lucas | 67 | Father | — | Canada-English |
| 79 | Clara Storey | 78 | Head | — | New York |
| 80 | Harold Storey | 47 | Son | Bicycle Repairer | New York |
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)