JM
John Mcdonough — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this John Mcdonough across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1882), then head of a 7-person household.
Age 58
b. ~1882
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | McDonough |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Swissvale Borough |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Laborer |
| Township / Ward | Swissvale Borough |
| Est. Birth Year | ~1882 |
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 |
|---|---|---|---|---|
| John Mcdonough | Head | — | 58 | ~1882 |
| Leo Lane | Other | — | 43 | ~1897 |
| Robert Mcdonough | Son | — | 7 | ~1933 |
| Raymond Mcdonough | Son | — | 19 | ~1921 |
| Jerry Mcdonough | Son | — | 11 | ~1929 |
| John Mcdonough | Son | — | 28 | ~1912 |
| Catherine Mcdonough | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Allegheny, Pennsylvania
Head, age 34
Allegheny, Pennsylvania · implied b. ~1886 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonagh |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1904 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Chauffeur |
| Industry | Private family |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1910 |
| Birthplace (normalized) | ireland |
1930
Allegheny, Pennsylvania
Head, age 45
Allegheny, Pennsylvania · implied b. ~1885 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonough |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1902 |
| Age at First Marriage | 26 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Water Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Allegheny-County, Pennsylvania
Head, age 58
Allegheny-County, Pennsylvania · implied b. ~1882 — 7 household members
| Surname | McDonough |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Swissvale Borough |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Mcdonough across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mcdonough
Head · 1940 · age 58 · b. ~1882 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03418-00674)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Madeline Conlen | 22 | Head | Stenographer | Pennsylvania |
| 42 | William Conlen | 36 | Nephew | Laborer | Pennsylvania |
| 43 | Mary Hazel | 42 | Housekeeper | Housekeeper | Pennsylvania |
| 44 | John Mcdonough THIS PERSON | 58 | Head | Laborer | Ireland |
| 45 | Catherine Mcdonough | 48 | Wife | — | Pennsylvania |
| 46 | John Jr. Mcdonough | 28 | Son | Laborer | Pennsylvania |
| 47 | Raymond Mcdonough | 19 | Son | — | Pennsylvania |
| 48 | Jerry Mcdonough | 11 | Son | — | Pennsylvania |
| 49 | Robert Mcdonough | 7 | Son | — | Pennsylvania |
| 50 | Leo Lane | 43 | Boarder | — | Pennsylvania |
| 51 | Andrew Kufel | 48 | Head | Laborer | Hungary |
| 52 | Andrew Jr. Kufel | 21 | Son | Laborer | Pennsylvania |
| 53 | Mary Kufel | 43 | Wife | — | Hungary |
| 54 | Anita Kufel | 19 | Daughter | Office Clerk | Pennsylvania |
| 55 | John Kufel | 17 | Son | — | Pennsylvania |
| 56 | Bill Kufel | 15 | Son | — | Pennsylvania |
| 57 | Joseph Kufel | 12 | Son | — | Pennsylvania |
| 58 | Mary J. Kufel | 10 | Daughter | — | Pennsylvania |
| 59 | David Kufel | 8 | Son | — | Pennsylvania |
| 60 | Victor Kufel | 5 | Son | — | Pennsylvania |
| 61 | James J. Corley | 56 | Head | Machinist | Pennsylvania |
| 62 | Catherine Corley | 55 | Wife | — | Pennsylvania |
| 63 | Rose Rita Corley | 24 | Daughter | Clerk | Pennsylvania |
| 64 | Betty Corley | 19 | Daughter | Saleslady | Pennsylvania |
| 65 | Jean Corley | 19 | Daughter | Saleslady | Pennsylvania |
| 66 | Margaret Young | 50 | Head | — | Pennsylvania |
| 67 | Michael Murphy | 68 | Head | Laborer | Ireland |
| 68 | Bridget Murphy | 66 | Wife | — | Ireland |
| 69 | Patrick Slattery | 30 | Head | Laborer | Pennsylvania |
| 70 | Agnes Slattery | 35 | Wife | — | Pennsylvania |
| 71 | Margaret Slattery | 6 | Daughter | — | Pennsylvania |
| 72 | Geraldine Slattery | 3 | Daughter | — | Pennsylvania |
| 73 | Edward Murphy | 29 | Head | Clerk | Pennsylvania |
| 74 | Gertrude Murphy | 30 | Wife | — | Pennsylvania |
| 75 | William Murphy | 4 | Son | — | Pennsylvania |
| 76 | Elizabeth Klumans | 45 | Head | — | Pennsylvania |
| 77 | George Klumans | 20 | Son | New Worker | Pennsylvania |
| 78 | Dorothy Klumans | 18 | Daughter | File Clerk | Pennsylvania |
| 79 | Doris Klumans | 17 | Daughter | — | Pennsylvania |
| 80 | Winifred Klumans | 15 | Daughter | — | 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)