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John Mcnulty — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this John Mcnulty across the 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 6-person household.
Age 16
b. ~1924
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | McNulty |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Milmont |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Milmont |
| Est. Birth Year | ~1924 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Rebecca Mcnulty | Daughter | — | 11 | ~1929 |
| Rose Mcnulty | Spouse | — | 38 | ~1902 |
| Rose Mcnulty | Daughter | — | 14 | ~1926 |
| Dorothy Mcnulty | Daughter | — | 8 | ~1932 |
| John Mcnulty | Son | — | 16 | ~1924 |
| John Mcnulty | Head | — | 48 | ~1892 |
Census Appearances
1930
Delaware, Pennsylvania
Son, age 6
Delaware, Pennsylvania · implied b. ~1924 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNulty |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Son, age 16
Delaware-County, Pennsylvania · implied b. ~1924 — 6 household members
| Surname | McNulty |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Milmont |
| 1935 Residence (County) | Delaware |
| Class of Worker | 0 |
| Highest Grade | Hs 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 Mcnulty across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcnulty
Son · 1940 · age 16 · b. ~1924 · Pennsylvania
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Sibling
Dorothy Mcnulty
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rebecca Mcnulty
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Mcnulty
Sibling · 1940 · age 14
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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03495-00427)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eli Gillen | 19 | Son | Helper (Filling) | Pennsylvania |
| 2 | Helen Gillen | 16 | Daughter | — | Pennsylvania |
| 3 | Lillian Gillen | 12 | Daughter | — | Pennsylvania |
| 4 | Ernest Lohr | 46 | Head | Driller (Trim) | Pennsylvania |
| 5 | Sarah Lohr | 42 | Wife | — | Northern Ireland |
| 6 | Ernest Lohr | 17 | Son | — | Pennsylvania |
| 7 | Dorothy Lohr | 16 | Daughter | — | Pennsylvania |
| 8 | Albert Lohr | 14 | Son | — | Pennsylvania |
| 9 | Eleanor Lohr | 12 | Daughter | — | Pennsylvania |
| 10 | Clarence Lohr | 9 | Son | — | Pennsylvania |
| 11 | Joseph Lohr | 7 | Son | — | Pennsylvania |
| 12 | Sarah Lohr | 5 | Daughter | — | Pennsylvania |
| 13 | Robert Gracey | 40 | Head | — | N. Ireland |
| 14 | Walter Townsend | 40 | Head | Laborer | Maryland |
| 15 | Gemma Townsend | 38 | Wife | Laundress | Virginia |
| 16 | Alice Collins | 11 | Niece | — | Maryland |
| 17 | Eugene Miller | 31 | Head | Paper Maker | Pennsylvania |
| 18 | Anna May Miller | 21 | Wife | — | Pennsylvania |
| 19 | Guiseppe Caruso | 55 | Head | Laborer | Italy |
| 20 | Georgiana Caruso | 44 | Wife | — | Italy |
| 21 | Marie Caruso | 18 | Daughter | Trimmer | Italy |
| 22 | Jennie Caruso | 9 | Daughter | — | Pennsylvania |
| 23 | John Mcnulty | 48 | Head | Watchman | Pennsylvania |
| 24 | Rose Mcnulty | 38 | Wife | — | Pennsylvania |
| 25 | John Mcnulty THIS PERSON | 16 | Son | — | Pennsylvania |
| 26 | Rose Mcnulty | 14 | Daughter | — | Pennsylvania |
| 27 | Rebecca Mcnulty | 11 | Daughter | — | Pennsylvania |
| 28 | Dorothy Mcnulty | 8 | Daughter | — | Pennsylvania |
| 29 | John Pozdalski | 27 | Head | Burner | Pennsylvania |
| 30 | Roberta Pozdalski | 27 | Wife | — | N. Carolina |
| 31 | Walter Bontinate | 33 | Head | Pattern Maker | Pennsylvania |
| 32 | Sophie Bontinate | 29 | Wife | Accordion Player | Pennsylvania |
| 33 | Walter Bontinate | 8 | Son | — | Pennsylvania |
| 34 | Anton Tujak | 50 | Uncle | Repair Shop Mechanic | Poland |
| 35 | Casimir Busenaski | 51 | Head | Blacksmith | Poland |
| 36 | Frances Busenaski | 52 | Wife | — | Poland |
| 37 | Walter Slegata | 34 | Head | Machinist | Poland |
| 38 | Irene Slegata | 30 | Wife | — | Penna |
| 39 | Raymond Slegata | 9 | Son | — | Penna |
| 40 | June Slegata | 5 | Daughter | — | 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)