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John Mulligan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this John Mulligan across the 1920, 1930 and 1940 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1902), then head of a 5-person household.
Age 28
b. ~1902
Male
Head
Born: Pennsylvania
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Mulligan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 23 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Crane Man |
| Industry | Bolt Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 23.00 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Crane Man |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1902 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Mulligan | Daughter | — | ~1930 | |
| John Mulligan | Head | — | 28 | ~1902 |
| Lawrence Mulligan | Son | — | 2 | ~1928 |
| John Mulligan | Son | — | ~1930 | |
| Frances Mulligan | Spouse | — | 22 | ~1908 |
Census Appearances
1920
Allegheny, Pennsylvania
Other, age 17
Allegheny, Pennsylvania · implied b. ~1903 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mulligan |
| Given Name | John |
| Relationship to Head | Brother-in-law |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Laborer |
| Industry | Duff Mfg Co |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Head, age 28
Allegheny, Pennsylvania · implied b. ~1902 — 5 household members
| Surname | Mulligan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 23 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Crane Man |
| Industry | Bolt Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 23.00 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 40
Allegheny-County, Pennsylvania · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Milligan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Unincorporated place Library |
| 1935 Residence (County) | Allegheny |
| Occupation | Salesman |
| Industry | Insurance Co. |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1500 |
| Highest Grade | Hs 4 |
| 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 Mulligan 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 Mulligan
Head · 1930 · age 28 · b. ~1902 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel1987:0622)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Philip Long | 25 | Head | Truck Driver | Pennsylvania |
| 2 | Lillian Long | 23 | Wife | None | Pennsylvania |
| 3 | Violet May Long | 2 | Daughter | None | Pennsylvania |
| 4 | John Long | 1 | Son | None | Pennsylvania |
| 5 | Evan Williams | 34 | Head | Machine Hand | Pennsylvania |
| 6 | Stella Williams | 30 | Wife | None | Germany |
| 7 | George Williams | 37 | Head | Clerk | Wales |
| 8 | Phoebe Williams | 63 | Mother | None | Ohio |
| 9 | Fred Bay | 50 | Head | Motorman | Pennsylvania |
| 10 | Anna Bay | 45 | Wife | None | Pennsylvania |
| 11 | Rita Bay | 13 | Daughter | None | Pennsylvania |
| 12 | Albert Bay | 12 | Son | None | Pennsylvania |
| 13 | Edward Bay | 8 | Son | None | Pennsylvania |
| 14 | John Fitzpatrick | 40 | Head | Motorman | Pennsylvania |
| 15 | Katherine Fitzpatrick | 35 | Wife | None | Pennsylvania |
| 16 | Thomas Fitzpatrick | 15 | Son | None | Pennsylvania |
| 17 | Rita Fitzpatrick | 13 | Daughter | None | Pennsylvania |
| 18 | Mary Fitzpatrick | 11 | Daughter | None | Pennsylvania |
| 19 | William Fitzpatrick | 9 | Son | None | Pennsylvania |
| 20 | Dolores Fitzpatrick | 7 | Daughter | None | Pennsylvania |
| 21 | John Fitzpatrick | 4 | Son | None | Pennsylvania |
| 22 | John Mulligan THIS PERSON | 28 | Head | Crane Man | Pennsylvania |
| 23 | Frances Mulligan | 22 | Wife | None | Pennsylvania |
| 24 | Lawrence Mulligan | 2 | Son | None | Pennsylvania |
| 25 | Mary R. Mulligan | 0 | Daughter | None | Pennsylvania |
| 26 | John Mulligan | 0 | Son | None | Pennsylvania |
| 27 | William Jenkins | 49 | Head | Printer | Pennsylvania |
| 28 | Emma Jenkins | 58 | Wife | None | Pennsylvania |
| 29 | Irene Jenkins | 15 | Daughter | None | Pennsylvania |
| 30 | George Jenkins | 13 | Son | None | Pennsylvania |
| 31 | Earl Jenkins | 10 | Son | None | Pennsylvania |
| 32 | Robert Jenkins | 6 | Son | None | Pennsylvania |
| 33 | Lillian Jenkins | 5 | Daughter | None | Pennsylvania |
| 34 | Esther Jenkins | 3 | Daughter | None | Pennsylvania |
| 35 | Raymond Jenkins | 1 | Son | None | Pennsylvania |
| 36 | William Jenkins | 69 | Son | Street Cleaner | Germany |
| 37 | John Roach | 27 | Head | Laborer | Pennsylvania |
| 38 | Adela Roach | 23 | Wife | None | Wisconsin |
| 39 | Cornelius Roach | 5 | Son | None | Pennsylvania |
| 40 | Beatrice Roach | 3 | Daughter | None | Pennsylvania |
| 41 | Theresa Roach | 1 | Daughter | None | Pennsylvania |
| 42 | Ephraim Gifford | 57 | Head | Laborer | New Jersey |
| 43 | Alberta Gifford | 57 | Wife | None | Baltimore, Maryland |
| 44 | Mary Gifford | 21 | Daughter | Nurse Maid | Pennsylvania |
| 45 | Richard Phillips | 32 | Head | Laborer | Pennsylvania |
| 46 | Christina Phillips | 30 | Wife | None | Pennsylvania |
| 47 | Richard Phillips | 9 | Son | None | Pennsylvania |
| 48 | George Phillips | 5 | Son | None | Pennsylvania |
| 49 | Katherine Klein | 75 | Mother-in-law | None | Germany |
| 50 | John Jeanner | 44 | Head | Salesman | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)