JL
James Lucas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Northumberland-County, Pennsylvania
Our Model Tree links this James Lucas across the 1930 and 1940 US Censuses in Northumberland-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1916), then head of a 9-person household.
Age 24
b. ~1916
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Northumberland-County, Pennsylvania |
| Surname | Lucas |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Zerbe T. |
| 1935 Residence (County) | Northumberland |
| Additional Details | |
| Occupation | New Worker |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | New Worker |
| Township / Ward | Zerbe T |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Mabel Lucas | Daughter | — | 25 | ~1915 |
| Dawn Paul | Daughter | — | 7 | ~1933 |
| Elizabeth Paul | Daughter | — | 24 | ~1916 |
| George Lucas | Head | — | 67 | ~1873 |
| Edward Paul | Other | — | 26 | ~1914 |
| James Lucas | Son | — | 24 | ~1916 |
| Edward Paul | Son | — | 5 | ~1935 |
| John Lucas | Son | — | 26 | ~1914 |
| Florence Lucas | Spouse | — | 63 | ~1877 |
Census Appearances
1930
Northumberland, Pennsylvania
Son, age 12
Northumberland, Pennsylvania · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lucas |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Northumberland-County, Pennsylvania
Son, age 24
Northumberland-County, Pennsylvania · implied b. ~1916 — 9 household members
| Surname | Lucas |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Zerbe T. |
| 1935 Residence (County) | Northumberland |
| Occupation | New Worker |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 James Lucas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Lucas
Son · 1940 · age 24 · b. ~1916 · Pennsylvania
★ You are viewing this record
Sibling
Mabel Lucas
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Paul
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dawn Paul
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lucas
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Paul
Sibling · 1940 · age 24
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 — Northumberland-County, Pennsylvania
Open full size
1940 US Federal Census — Northumberland-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03598-00888)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Isabella Keim | 12 | Daughter | — | Pennsylvania |
| 2 | Laura Keim | 10 | Daughter | — | Pennsylvania |
| 3 | Warren Keim | 8 | Son | — | Pennsylvania |
| 4 | Doris Keim | 6 | Daughter | — | Pennsylvania |
| 5 | Ralph Keim | 2 | Son | — | Pennsylvania |
| 6 | Leonard Keim | 1 | Son | — | Pennsylvania |
| 7 | James Gilchrist | 36 | Head | Miner | Pennsylvania |
| 8 | Edith Gilchrist | 34 | Wife | — | Pennsylvania |
| 9 | Margaret Gilchrist | 12 | Daughter | — | Pennsylvania |
| 10 | James Gilchrist | 10 | Son | — | Pennsylvania |
| 11 | Jeanette Gilchrist | 2 | Daughter | — | Pennsylvania |
| 12 | David Morgan | 58 | Lodger | Laborer | Pennsylvania |
| 13 | Arthur D. Derk | 58 | Head | Laborer | Pennsylvania |
| 14 | Jamie Derk | 37 | Wife | — | Pennsylvania |
| 15 | Robert Derk | 12 | Son | — | Pennsylvania |
| 16 | Arthur Jr. Derk | 5 | Son | — | Pennsylvania |
| 17 | Dorothy Derk | 2 | Son | — | Pennsylvania |
| 18 | Lavina D. Gerlov | 22 | Head | — | Pennsylvania |
| 19 | Charles Gerlov | 6 | Son | — | Pennsylvania |
| 20 | Mabel D. Swinehart | 52 | Head | — | Pennsylvania |
| 21 | Ralph Swinehart | 21 | Son | Laborer | Pennsylvania |
| 22 | Walter Swinehart | 19 | Son | Laborer | Pennsylvania |
| 23 | Catherine Swinehart | 17 | Daughter | — | Pennsylvania |
| 24 | Lorraine Swinehart | 15 | Daughter | — | Pennsylvania |
| 25 | Gerald Swinehart | 13 | Son | — | Pennsylvania |
| 26 | Barry Swinehart | 10 | Son | — | Pennsylvania |
| 27 | Lillie D. Woodrow | 65 | Head | — | Pennsylvania |
| 28 | Herbert Woodrow | 26 | Son | Salesman | Pennsylvania |
| 29 | Caroline Reeb | 53 | Lodger | High School Teacher | Pennsylvania |
| 30 | George Lucas | 67 | Head | Miner | Scotland |
| 31 | Florence Lucas | 63 | Wife | — | Scotland |
| 32 | Mabel Lucas | 25 | Daughter | Seamstress | Pennsylvania |
| 33 | John Lucas | 26 | Son | New Worker | Pennsylvania |
| 34 | James Lucas THIS PERSON | 24 | Son | New Worker | Pennsylvania |
| 35 | Edward Paul | 26 | Son-in-law | Truck Driver | Pennsylvania |
| 36 | Elizabeth Paul | 24 | Daughter | — | Pennsylvania |
| 37 | Dawn Paul | 7 | Daughter | — | Pennsylvania |
| 38 | Edward Paul | 5 | Son | — | Pennsylvania |
| 39 | Lewis D. Appel | 32 | Head | Laborer | Pennsylvania |
| 40 | Elva Appel | 31 | Wife | — | Pennsylvania |
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)