JG
John Gillespie — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this John Gillespie across the 1920, 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Jonathan & Susan — first a head (b.~1899), then head of a 5-person household.
Age 41
b. ~1899
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Gillespie |
| Given Name | John L. Sr. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester City |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | Handyman |
| Industry | Shipyard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Handyman |
| Township / Ward | Chester City |
| Est. Birth Year | ~1899 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Martha Gillespie | Spouse | — | 42 | ~1898 |
| John Gillespie | Son | — | 18 | ~1922 |
| Wm Gillespie | Son | — | 16 | ~1924 |
| Mildred Gillespie | Daughter | — | 11 | ~1929 |
| John Gillespie | Head | — | 41 | ~1899 |
Census Appearances
1920
Delaware, Pennsylvania
Son, age 20
Delaware, Pennsylvania · implied b. ~1900 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gillespie |
| Given Name | John T |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Delaware, Pennsylvania
Head, age 31
Delaware, Pennsylvania · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gillespie |
| Given Name | John C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 20 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | Ship Yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Head, age 41
Delaware-County, Pennsylvania · implied b. ~1899 — 5 household members
| Surname | Gillespie |
| Given Name | John L. Sr. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester City |
| 1935 Residence (County) | Delaware |
| Occupation | Handyman |
| Industry | Shipyard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | No 4 |
| 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 John Gillespie across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jonathan Gillespie (~0.92 confidence) and mother Susan Gillespie (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jonathan Gillespie
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Susan Gillespie
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Gillespie
Head · 1940 · age 41 · b. ~1899 · 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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-03487-00710)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edwin G. Roder | 63 | Head | Proprietor | Pennsylvania |
| 2 | Sarah R. Roder | 61 | Wife | — | Pennsylvania |
| 3 | Sara S. Roder | 26 | Daughter | — | Pennsylvania |
| 4 | Wm. F. Whitefield | 69 | Head | Superintendent | Pennsylvania |
| 5 | Lilly C. Whitefield | 68 | Wife | — | Pennsylvania |
| 6 | Anna Gross | 40 | Head | Proprietor | New York |
| 7 | Jack Gross | 14 | Son | — | Pennsylvania |
| 8 | John J. Smallwood | 37 | Head | Draftsman | Pennsylvania |
| 9 | Mildred M. Smallwood | 27 | Wife | — | Pennsylvania |
| 10 | John L. Smallwood | 9 | Son | — | Pennsylvania |
| 11 | Dolores M. Smallwood | 4 | Daughter | — | Pennsylvania |
| 12 | Donald J. Smallwood | 3 | Son | — | Pennsylvania |
| 13 | Rosa Jarrett | 54 | Head | — | Northern Ireland |
| 14 | Harry Smallwood | 60 | Roomer | Machinist | England |
| 15 | Charles Emery | 28 | Head | Truck Driver | Pennsylvania |
| 16 | Mary Emery | 23 | Wife | — | Pennsylvania |
| 17 | Edmond Fendler | 39 | Head | Shop Fitter | Germany |
| 18 | Mary E. Fendler | 24 | Wife | — | Pennsylvania |
| 19 | Charles R. Fendler | 4 | Son | — | New York |
| 20 | Doris June Fendler | 1 | Daughter | — | Pennsylvania |
| 21 | Lewis Laird | 40 | Head | Oiler | Pennsylvania |
| 22 | Eleanor T. Laird | 20 | Daughter | — | Pennsylvania |
| 23 | Wm. L. Laird | 17 | Son | — | Pennsylvania |
| 24 | Mildred Kinnee | 25 | Head | Waitress | New Jersey |
| 25 | Clarence Sr. Curce | 46 | Father | Agent | New Jersey |
| 26 | Clarence Jr. Curce | 19 | Brother | — | New Jersey |
| 27 | Wm. C. Walton | 36 | Head | Chrystallizer | Pennsylvania |
| 28 | Grace W. Walton | 36 | Wife | — | Pennsylvania |
| 29 | Wm. T. Walton | 9 | Son | — | Pennsylvania |
| 30 | Frances Ida Walton | 3 | Daughter | — | Pennsylvania |
| 31 | Charles A. Walton | 27 | Brother | Truck Driver | Pennsylvania |
| 32 | John L. Sr. Gillespie THIS PERSON | 41 | Head | Handyman | Pennsylvania |
| 33 | Martha H. Gillespie | 42 | Wife | — | Pennsylvania |
| 34 | John L. Jr. Gillespie | 18 | Son | Pipe Laying | Pennsylvania |
| 35 | Wm. A. Gillespie | 16 | Son | — | Pennsylvania |
| 36 | Mildred H. Gillespie | 11 | Daughter | — | Pennsylvania |
| 37 | John C. Mccafferty | 22 | Head | Helper | Pennsylvania |
| 38 | Margaret T. Mccafferty | 22 | Wife | — | Pennsylvania |
Pedigree Summary
John
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)