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John Mcelroy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lehigh-County, Pennsylvania
Our Model Tree links this John Mcelroy across the 1930 and 1940 US Censuses in Lehigh-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lehigh-County, Pennsylvania |
| Surname | McElroy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Emmaus Borough |
| 1935 Residence (County) | Lehigh |
| Additional Details | |
| Occupation | Taxi Driver |
| Industry | Taxi Service |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 275 |
| Highest Grade | H 1 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Taxi Driver |
| Township / Ward | Emmaus Borough |
| Est. Birth Year | ~1915 |
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 |
|---|---|---|---|---|
| Francis Mcelroy | Son | — | 29 | ~1911 |
| Cecelia Mcelroy | Daughter | — | 23 | ~1917 |
| Abbie Mcelroy | Head | — | 62 | ~1878 |
| John Mcelroy | Son | — | 25 | ~1915 |
| Burkard Mcelroy | Son | — | 36 | ~1904 |
Census Appearances
1930
Lehigh, Pennsylvania
Son, age 15
Lehigh, Pennsylvania · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McElroy |
| Given Name | John E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Errand Boy |
| Industry | News Agency |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lehigh-County, Pennsylvania
Son, age 25
Lehigh-County, Pennsylvania · implied b. ~1915 — 5 household members
| Surname | McElroy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Emmaus Borough |
| 1935 Residence (County) | Lehigh |
| Occupation | Taxi Driver |
| Industry | Taxi Service |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 275 |
| Highest Grade | H 1 |
| 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 John Mcelroy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcelroy
Son · 1940 · age 25 · b. ~1915 · Pennsylvania
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Sibling
Cecelia Mcelroy
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mcelroy
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Burkard Mcelroy
Sibling · 1940 · age 36
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 — Lehigh-County, Pennsylvania
Open full size
1940 US Federal Census — Lehigh-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03546-00269)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Kenneth Jon Amrhein | 19 | Son | Cook | Penna |
| 42 | Carl Price | 32 | Lodger | Trucker | Penna |
| 43 | Robert R. Hertzog | 36 | Head | Laborer | Pennsylvania |
| 44 | Alma B. Hertzog | 33 | Wife | — | Pennsylvania |
| 45 | Glenn R. Hertzog | 8 | Son | — | Pennsylvania |
| 46 | Evelyn A. Hertzog | 6 | Daughter | — | Pennsylvania |
| 47 | Warren N. Bauman | 40 | Head | Laborer | Pennsylvania |
| 48 | Pearl A. R. Bauman | 33 | Wife | — | Pennsylvania |
| 49 | Helen J. Bauman | 12 | Daughter | — | Pennsylvania |
| 50 | Nalla J. Bauman | 6 | Son | — | Pennsylvania |
| 51 | Daniel E. Miller | 59 | Head | Painter | Pennsylvania |
| 52 | Marie Miller | 56 | Wife | — | Pennsylvania |
| 53 | Frederick Miller | 26 | Son | New Worker | Pennsylvania |
| 54 | Catherine Miller | 25 | Daughter | New Worker | Pennsylvania |
| 55 | Joseph Miller | 19 | Son | Laborer | Pennsylvania |
| 56 | Jean Miller | 14 | Daughter | — | Pennsylvania |
| 57 | Chas. D. Braucher | 67 | Head | Motorman | Pennsylvania |
| 58 | Mary M. Braucher | 61 | Wife | — | Pennsylvania |
| 59 | Abbie Mcelroy | 62 | Head | — | Pennsylvania |
| 60 | Burkard Mcelroy | 36 | Son | New Worker | Pennsylvania |
| 61 | Francis Mcelroy | 29 | Son | Laborer | Pennsylvania |
| 62 | John Mcelroy THIS PERSON | 25 | Son | Taxi Driver | Pennsylvania |
| 63 | Cecelia Mcelroy | 23 | Daughter | Stenographer | Pennsylvania |
| 64 | Henry Platt | 28 | Head | Furrier | Maryland |
| 65 | Genevieve Platt | 21 | Daughter | — | Pennsylvania |
| 66 | William H. Platt | 3 | Grandson | — | Pennsylvania |
| 67 | Elmer A. Mory | 31 | Head | Baker | Pennsylvania |
| 68 | Carrie M. Mory | 25 | Wife | — | Pennsylvania |
| 69 | Shirley A. Mory | 1 | Daughter | — | Pennsylvania |
| 70 | Ralph J. Ott | 56 | Head | Machinist | Pennsylvania |
| 71 | Florence M. Ott | 42 | Wife | — | Pennsylvania |
| 72 | Lloyd E. Polster | 29 | Head | Molder Helper | Pennsylvania |
| 73 | Ruth A. Polster | 27 | Wife | Winder | Pennsylvania |
| 74 | Barbara J. Polster | 1 | Daughter | — | Pennsylvania |
| 75 | Joseph Butman | 60 | Head | Machinist | Penna |
| 76 | Missouri Butman | 46 | Wife | — | Penna |
| 77 | Helen Butman | 11 | Daughter | — | Penna |
| 78 | William Butman | 8 | Son | — | Penna |
| 79 | Raymond Moore | 41 | Head | Laborer | Penna |
| 80 | Eva Moore | 39 | Wife | Winder | Penna |
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)