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John Shields — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lehigh-County, Pennsylvania
Our Model Tree links this John Shields across the 1920, 1930 and 1940 US Censuses in Lehigh-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Mark & Catherine — first a head (b.~1916), then head of a 3-person household.
Age 24
b. ~1916
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lehigh-County, Pennsylvania |
| Surname | Shields |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Allentown city |
| 1935 Residence (County) | Lehigh |
| Additional Details | |
| Occupation | assembly line |
| Industry | truck manufacturer |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 450 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Assembly Line |
| Township / Ward | Allentown City |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Terance Shields | Son | — | 1 | ~1939 |
| John Shields | Head | — | 24 | ~1916 |
| Thelma Shields | Spouse | — | 20 | ~1920 |
Census Appearances
1920
Lehigh, Pennsylvania
Son, age 4
Lehigh, Pennsylvania · implied b. ~1916 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shields |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Lehigh, Pennsylvania
Son, age 14
Lehigh, Pennsylvania · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Shields |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lehigh-County, Pennsylvania
Head, age 24
Lehigh-County, Pennsylvania · implied b. ~1916 — 3 household members
| Surname | Shields |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Allentown city |
| 1935 Residence (County) | Lehigh |
| Occupation | assembly line |
| Industry | truck manufacturer |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 450 |
| Highest Grade | H-2 |
| 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 Shields across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Mark Shields (~0.92 confidence) and mother Catherine Shields (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Mark Shields
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Catherine Shields
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Shields
Head · 1940 · age 24 · b. ~1916 · 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 — Lehigh-County, Pennsylvania
Open full size
1940 US Federal Census — Lehigh-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03542-00711)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Shields THIS PERSON | 24 | Head | Assembly Line | Pennsylvania |
| 42 | Thelma Shields | 20 | Wife | None | Pennsylvania |
| 43 | Terance Shields | 1 | Son | — | Pennsylvania |
| 45 | John J. Shiffert | 58 | Head | Laborer | Pennsylvania |
| 46 | Wilmer Kressley | 32 | Head | Silk Weaver | Pennsylvania |
| 47 | Grace Kressley | 31 | Wife | Sewer | Pennsylvania |
| 48 | Florence Snyder | 20 | Lodger | Baller | Pennsylvania |
| 49 | Stanley Graver | 56 | Head | Janitor | Pennsylvania |
| 50 | Mary Graver | 58 | Wife | — | Pennsylvania |
| 51 | Franklin Dilliard | 48 | Head | Bricklayer | Pennsylvania |
| 52 | Helen Dilliard | 50 | Wife | — | Pennsylvania |
| 53 | Ella Weiss | 58 | Head | Factory Worker | Pennsylvania |
| 54 | Harry Marsh | 41 | Head | Office Clerk | Pennsylvania |
| 55 | Ethel Marsh | 34 | Wife | Contingent | Pennsylvania |
| 56 | Charleson Troxel | 48 | Head | None | Pennsylvania |
| 57 | Helen Troxel | 46 | Wife | Ribbon Weaver | Pennsylvania |
| 58 | Robert Troxel | 21 | Son | Drafter | Pennsylvania |
| 59 | Charles Troxel | 19 | Son | Laborer | Pennsylvania |
| 60 | Richard Troxel | 16 | Son | None | Pennsylvania |
| 61 | Joyce Troxel | 14 | Daughter | None | Pennsylvania |
| 62 | Clifford Morrison | 47 | Head | Machinist | Pennsylvania |
| 63 | Emma M. Morrison | 45 | Wife | — | Pennsylvania |
| 64 | Elsie Morrison | 15 | Daughter | — | Pennsylvania |
| 65 | George Hintzel | 72 | Head | Contractor | Pennsylvania |
| 66 | Florence Hintzel | 53 | Wife | Dishwasher | Pennsylvania |
| 67 | Harry M. Fredrick | 36 | Head | Service Man | Pennsylvania |
| 68 | Mary R. Fredrick | 33 | Wife | Operator | Pennsylvania |
| 69 | Joan Fredrick | 7 | Daughter | — | Pennsylvania |
| 70 | William Fredrick | 3 | Son | — | Pennsylvania |
| 71 | Willis Aschm | 51 | Head | County Assessor | Pennsylvania |
| 72 | Charles R. Aschm | 46 | Brother | Cabinet Maker | Pennsylvania |
| 73 | Beulah Aschm | 46 | Sister in law | House Cleaner | Pennsylvania |
| 74 | Paul Quith | 33 | Head | Order Taker | Pennsylvania |
| 75 | Emma Quith | 31 | Wife | None | Pennsylvania |
| 76 | Deloris Quith | 5 | Daughter | — | Pennsylvania |
| 77 | George P. Schlecker | 68 | Head | Printer Proprietor | Pennsylvania |
| 78 | Eva M. Schlecker | 65 | Wife | — | Pennsylvania |
| 79 | Raymond Henrick | 39 | Head | Machinist | Pennsylvania |
| 80 | Ethyl H. Henrick | 37 | Wife | Operator | Pennsylvania |
Related Census Records
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)