RL
Robert Lucas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Armstrong-County, Pennsylvania
Our Model Tree links this Robert Lucas across the 1920, 1930 and 1940 US Censuses in Armstrong-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Robert & Margaret — first a head (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Male
Head
Born: Wyoming
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Armstrong-County, Pennsylvania |
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Wyoming |
| 1935 Residence (City) | Sagamore |
| 1935 Residence (County) | Armstrong |
| Additional Details | |
| Occupation | laborer |
| Industry | coal mine |
| Class of Worker | PW |
| Hours Worked | 21 |
| Income (1939) | 580 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Wyoming |
| Birth Country | United States |
| Birthplace (normalized) | wyoming |
| Occupation | Laborer |
| Township / Ward | Sagamore |
| Est. Birth Year | ~1914 |
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 |
|---|---|---|---|---|
| William Dahlin | Other | — | 17 | ~1923 |
| Robert Lucas | Son | — | 1 | ~1939 |
| Robert Lucas | Head | — | 26 | ~1914 |
| Elma Lucas | Spouse | — | 25 | ~1915 |
| Mrs Dahlin | Other | — | 63 | ~1877 |
Census Appearances
1920
Indiana, Pennsylvania
Son, age 6
Indiana, Pennsylvania · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Wyoming |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Birth State | Wyoming |
| Birth Country | United States |
| Birthplace (normalized) | wyoming |
1930
Armstrong, Pennsylvania
Son, age 16
Armstrong, Pennsylvania · implied b. ~1914 — 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 | 16 |
| Marital Status | Single |
| Birthplace | Wyoming |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Laborer |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Wyoming |
| Birth Country | United States |
| Birthplace (normalized) | wyoming |
1940
Armstrong-County, Pennsylvania
Head, age 26
Armstrong-County, Pennsylvania · implied b. ~1914 — 5 household members
| Surname | Lucas |
| Given Name | Robert |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Wyoming |
| 1935 Residence (City) | Sagamore |
| 1935 Residence (County) | Armstrong |
| Occupation | laborer |
| Industry | coal mine |
| Class of Worker | PW |
| Hours Worked | 21 |
| Income (1939) | 580 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Wyoming |
| Birth Country | United States |
| Birthplace (normalized) | wyoming |
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 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Robert Lucas (~0.92 confidence) and mother Margaret Lucas (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Lucas
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Margaret Lucas
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Lucas
Head · 1940 · age 26 · b. ~1914 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Armstrong-County, Pennsylvania
Open full size
1940 US Federal Census — Armstrong-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03422-00375)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Markiway | 16 | daughter | Waitress | Pennsylvania |
| 2 | Julia Markiway | 13 | daughter | — | Pennsylvania |
| 3 | Paul Markiway | 10 | son | — | Pennsylvania |
| 4 | Martha Markiway | 8 | daughter | — | Pennsylvania |
| 5 | George Bernicano | 55 | head | Miner | Italy |
| 6 | Jeannie Bernicano | 45 | wife | — | Pennsylvania |
| 7 | Sam Bernicano | 22 | son | Coal Loader | Pennsylvania |
| 8 | Anthony Bernicano | 20 | son | Waiter | Pennsylvania |
| 9 | Joseph Bernicano | 17 | son | — | Pennsylvania |
| 10 | Vernon Bernicano | 16 | son | — | Pennsylvania |
| 11 | Richard Bernicano | 13 | son | — | Pennsylvania |
| 12 | George Bernicano | 11 | son | — | Pennsylvania |
| 13 | James Bernicano | 8 | son | — | Pennsylvania |
| 14 | Mary Jane Bernicano | 4 | daughter | — | Pennsylvania |
| 15 | Ernest Bernicano | 0 | son | — | Pennsylvania |
| 16 | Andrew Bodnar | 52 | head | Miner | Slovakia |
| 17 | Susan Bodnar | 43 | wife | — | Pennsylvania |
| 18 | John Bodnar | 25 | son | Miner | Pennsylvania |
| 19 | Anna Bodnar | 22 | daughter | House Maid | Pennsylvania |
| 20 | Andrew Bodnar | 20 | son | Miner | Pennsylvania |
| 21 | John Baker | 26 | head | Welder | Pennsylvania |
| 22 | Edward Baker | 24 | brother | Laborer | Pennsylvania |
| 23 | Robert Lucas THIS PERSON | 26 | head | Laborer | Wyoming |
| 24 | Elma Lucas | 25 | wife | — | Pennsylvania |
| 25 | Robert Jr. Lucas | 1 | son | — | Pennsylvania |
| 26 | Mrs. Alfred Dahlin | 63 | mother-in-law | — | Sweden |
| 27 | William Dahlin | 17 | brother-in-law | — | Pennsylvania |
| 28 | Jacob King | 64 | head | Foreman | Pennsylvania |
| 29 | Eva King | 71 | wife | — | Pennsylvania |
| 30 | Inez King | 39 | daughter | Sales Lady | Pennsylvania |
| 31 | Erma King | 36 | daughter | School Teacher | Pennsylvania |
| 32 | Robert Lambing | 68 | head | Laborer | Pennsylvania |
| 33 | Orpha Lambing | 47 | wife | — | Pennsylvania |
| 34 | Eugene Lambing | 20 | son | New Worker | Pennsylvania |
| 35 | Dorothy Lambing | 18 | daughter | — | Pennsylvania |
| 36 | Elizabeth Lambing | 11 | daughter | — | Pennsylvania |
| 37 | Chris Fromer | 23 | head | Miner | Pennsylvania |
| 38 | Violet Fromer | 20 | wife | — | Pennsylvania |
| 39 | David Triggino | 46 | head | Foreman | Pennsylvania |
| 40 | Audrey Triggino | 46 | wife | — | Pennsylvania |
Pedigree Summary
Robert
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)