JW
James Williamson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Northumberland-County, Pennsylvania
Our Model Tree links this James Williamson across the 1920, 1930 and 1940 US Censuses in Northumberland-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents William & Rosa — first a head (b.~1904), then head of a 3-person household.
Age 36
b. ~1904
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Northumberland-County, Pennsylvania |
| Surname | Williamson |
| Given Name | James P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Upper Augusta |
| 1935 Residence (County) | Northumberland |
| Additional Details | |
| Occupation | Weaver |
| Industry | Silk Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Weaver |
| Township / Ward | Upper Augusta |
| Est. Birth Year | ~1904 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Betty Williamson | Daughter | — | 17 | ~1923 |
| James Williamson | Head | — | 36 | ~1904 |
| Mary Williamson | Spouse | — | 35 | ~1905 |
Census Appearances
1920
Northumberland, Pennsylvania
Son, age 16
Northumberland, Pennsylvania · implied b. ~1904 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williamson |
| Given Name | James P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Weaver |
| Industry | Silk Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Northumberland, Pennsylvania
Head, age 26
Northumberland, Pennsylvania · implied b. ~1904 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williamson |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 17 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Weaver |
| Industry | Silk Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 28.00 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Northumberland-County, Pennsylvania
Head, age 36
Northumberland-County, Pennsylvania · implied b. ~1904 — 3 household members
| Surname | Williamson |
| Given Name | James P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Upper Augusta |
| 1935 Residence (County) | Northumberland |
| Occupation | Weaver |
| Industry | Silk Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Williamson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Williamson (~0.92 confidence) and mother Rosa Williamson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Williamson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Rosa Williamson
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Williamson
Head · 1940 · age 36 · b. ~1904 · 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 — 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-t0627-03598-00679)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George W. Reasler | 52 | Brother-in-law | — | Pennsylvania |
| 42 | Mary Louise Reasler | 13 | Niece | — | Pennsylvania |
| 43 | Albert A. Grady | 56 | Head | Farmer | Pennsylvania |
| 44 | Nellie Grady | 53 | Sister | — | Pennsylvania |
| 45 | Harvey J. Troxel | 57 | Friend | Laborer | Ohio |
| 46 | George Steinert | 74 | Head | — | Germany |
| 47 | Cora B. Steinert | 67 | Wife | — | Pennsylvania |
| 48 | Bertha J. Steinert | 46 | Daughter | Dressmaker | Pennsylvania |
| 49 | George S. Miller | 14 | Grandson | — | Pennsylvania |
| 50 | Frederick W. Steinert | 44 | Head | Service Station Proprietor | Pennsylvania |
| 51 | Mary Ella Steinert | 42 | Wife | — | Pennsylvania |
| 52 | John F. Conrad | 56 | Head | Lineman | Pennsylvania |
| 53 | Alma C. Hoover | 48 | Servant | Servant | Pennsylvania |
| 54 | Norman Conrad | 53 | Head | Laborer | Pennsylvania |
| 55 | Kathryn H. Conrad | 47 | Wife | — | Pennsylvania |
| 56 | James P. Williamson THIS PERSON | 36 | Head | Weaver | Pennsylvania |
| 57 | Mary A. Williamson | 35 | Wife | — | Pennsylvania |
| 58 | Betty L. Williamson | 17 | Daughter | — | Pennsylvania |
| 59 | Ralph A. Zimmerman | 58 | Head | Farmer | Pennsylvania |
| 60 | Agnes S. Zimmerman | 54 | Wife | — | Pennsylvania |
| 61 | Gladys L. Milhouse | 5 | Niece | — | Pennsylvania |
| 62 | Mary C. Gross | 56 | Head | — | Pennsylvania |
| 63 | Wilhelmina Gross | 28 | Daughter | — | Pennsylvania |
| 64 | Edward F. Gross | 19 | Son | Farmer | Pennsylvania |
| 65 | Joseph M. Gross | 13 | Son | — | Pennsylvania |
| 66 | John Bauer | 41 | Head | Salesmanager | Nebraska |
| 67 | Pauline Bauer | 33 | Wife | — | Pennsylvania |
| 68 | Judy L. Bauer | 7 | Daughter | — | Pennsylvania |
| 69 | Joan J. Bauer | 5 | Daughter | — | Pennsylvania |
| 70 | John J. Bauer | 1 | Son | — | Pennsylvania |
| 71 | Thelma M. Gross | 18 | Servant | Servant | Pennsylvania |
| 72 | Donald K. Arnold | 28 | Head | Farmer | Pennsylvania |
| 73 | Dorothy M. Arnold | 25 | Wife | — | Pennsylvania |
| 74 | Donald L. Arnold | 4 | Son | — | Pennsylvania |
| 75 | Ronald L. Arnold | 1 | Son | — | Pennsylvania |
| 76 | Frank L. Bogart | 32 | Head | Truck Driver | Pennsylvania |
| 77 | Beatrice Bogart | 31 | Wife | — | Pennsylvania |
| 78 | Jane Bogart | 5 | Daughter | — | Pennsylvania |
| 79 | Nancy L. Bogart | 2 | Daughter | — | Pennsylvania |
| 80 | Charlotte London | 25 | Cousin | — | Pennsylvania |
Pedigree Summary
James
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)