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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.~1926), then head of a 7-person household.
Age 14
b. ~1926
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lehigh-County, Pennsylvania |
| Surname | McElroy |
| Given Name | John E. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Bethlehem City |
| 1935 Residence (County) | Lehigh |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Bethlehem City |
| Est. Birth Year | ~1926 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Joseph Mcelroy | Son | — | 2 | ~1938 |
| James Mcelroy | Son | — | 11 | ~1929 |
| Muriel Mcelroy | Spouse | — | 36 | ~1904 |
| William Mcelroy | Head | — | 41 | ~1899 |
| Patrick Mcelroy | Other | — | 82 | ~1858 |
| John Mcelroy | Son | — | 14 | ~1926 |
| William Mcelroy | Son | — | 16 | ~1924 |
Census Appearances
1930
Northampton, Pennsylvania
Son, age 4
Northampton, Pennsylvania · implied b. ~1926 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McElroy |
| 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 |
| Can Read/Write | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lehigh-County, Pennsylvania
Son, age 14
Lehigh-County, Pennsylvania · implied b. ~1926 — 7 household members
| Surname | McElroy |
| Given Name | John E. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Bethlehem City |
| 1935 Residence (County) | Lehigh |
| Highest Grade | No 6 |
| 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 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 14 · b. ~1926 · Pennsylvania
★ You are viewing this record
Sibling
James Mcelroy
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mcelroy
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mcelroy
Sibling · 1940 · age 2
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-t0627-03545-00640)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard H. Porter | 16 | son | — | Pennsylvania |
| 2 | Joann E. Porter | 9 | daughter | — | Pennsylvania |
| 3 | James W. Porter | 3 | son | — | Pennsylvania |
| 4 | Fannie E. Porter | 77 | mother | — | Pennsylvania |
| 5 | Catherine M. Buck | 44 | Head | Clerk | Pennsylvania |
| 6 | Catherine T. Buck | 78 | mother | — | Pennsylvania |
| 7 | Alfred J. Buck | 48 | Brother | Laborer | Pennsylvania |
| 8 | Weston R. John | 47 | Head | Clerk | Pennsylvania |
| 9 | Mary E. John | 42 | wife | — | Pennsylvania |
| 10 | Weston E. John | 21 | son | Electrician | Pennsylvania |
| 11 | Kermit L. John | 16 | son | — | Pennsylvania |
| 12 | Harry D. Getty | 56 | Head | Express Messenger | Pennsylvania |
| 13 | Bertha M. Getty | 57 | wife | — | Pennsylvania |
| 14 | Christian Schmidt | 63 | Lodger | Laborer | Switzerland |
| 15 | Thomas Miles | 54 | Head | Supervising | Pennsylvania |
| 16 | Anna H. Miles | 47 | wife | — | Pennsylvania |
| 17 | Walter W. Anderson | 48 | Head | Clerk | Minnesota |
| 18 | Elsie J. Anderson | 47 | wife | — | Pennsylvania |
| 19 | Dorothy M. Anderson | 21 | daughter | Operator | Pennsylvania |
| 20 | — | None | — | — | — |
| 21 | Randolph W. Snyder | 53 | Head | Sales Department | Pennsylvania |
| 22 | Marie W. Snyder | 53 | wife | — | Pennsylvania |
| 23 | Russell J. Wilson | 45 | Head | Laborer | Pennsylvania |
| 24 | Marian D. Wilson | 44 | wife | — | Pennsylvania |
| 25 | Harris J. Wilson | 23 | son | Machinist | Pennsylvania |
| 26 | Grace D. Wilson | 21 | daughter in law | — | — |
| 27 | Donald J. Wilson | 17 | son | — | Pennsylvania |
| 28 | Harold E. Human | 42 | Head | Draftsman | Pennsylvania |
| 29 | Edith B. Human | 40 | wife | — | Pennsylvania |
| 30 | William B. Human | 18 | son | — | Pennsylvania |
| 31 | John R. Human | 16 | son | — | Pennsylvania |
| 32 | Lillian A. Rauch | 68 | Head | Sales Lady | Pennsylvania |
| 33 | William G. Mcelroy | 41 | Head | Clerk | Pennsylvania |
| 34 | Muriel A. Mcelroy | 36 | wife | — | Pennsylvania |
| 35 | William Mcelroy | 16 | son | — | Pennsylvania |
| 36 | John E. Mcelroy THIS PERSON | 14 | son | — | Pennsylvania |
| 37 | James J. Mcelroy | 11 | son | — | Pennsylvania |
| 38 | Joseph Mcelroy | 2 | son | — | Pennsylvania |
| 39 | Patrick Mcelroy | 82 | father | Janitor | Pennsylvania |
| 40 | George F. R. Bahnsen | 52 | Head | Official | 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)