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John Mulligan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Alameda, California
Our Model Tree links this John Mulligan across the 1920, 1930 and 1940 US Censuses in Alameda, California (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 5-person household.
Age 38
b. ~1892
Male
Head
Born: Ireland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Alameda, California |
| Surname | Mulligan |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1911 |
| Age at First Marriage | 28 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Hostler |
| Industry | Railroad Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 4000 |
| Veteran | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Hostler |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1892 |
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 |
|---|---|---|---|---|
| James Mone | Other | — | 37 | ~1893 |
| Betty Mulligan | Daughter | — | 6 | ~1924 |
| John Mulligan | Head | — | 38 | ~1892 |
| Rita Mulligan | Daughter | — | 5 | ~1925 |
| Elizabeth Mulligan | Spouse | — | 34 | ~1896 |
Census Appearances
1920
Alameda, California
Other, age 29
Alameda, California · implied b. ~1891 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mulligan |
| Given Name | John |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1911 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Steam Railway |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Alameda, California
Head, age 38
Alameda, California · implied b. ~1892 — 5 household members
| Surname | Mulligan |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1911 |
| Age at First Marriage | 28 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Hostler |
| Industry | Railroad Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 4000 |
| Veteran | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Alameda-County, California
Other, age 51
Alameda-County, California · implied b. ~1889 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mulligan |
| Given Name | John |
| Relationship to Head | Brother |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Single |
| Birthplace | Ireland |
| 1935 Residence (City) | Berkeley City |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Naturalized |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| 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 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 38 · b. ~1892 · California
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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 — Alameda, California
Open full size
1930 US Federal Census — Alameda, California
Page Contents
50 people indexed on this census page (ia:1930:15thcensuspopula108unit:0030)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry M. Crosby | 43 | Head | — | California |
| 2 | Emma M. Darrington | 61 | Head | — | Maine |
| 3 | Edgar Darrington | 37 | Lodger | Mechanic | Oregon |
| 4 | Gladys Darrington | 27 | Lodger | Secretary | Colorado |
| 5 | Wm. E. White | 63 | Head | Postal Clerk | California |
| 6 | Edith M. White | 54 | Wife | Housewife | Michigan |
| 7 | Henry White | 23 | Son | — | California |
| 8 | Ernest Bounds | 7 | Son | — | California |
| 9 | Guy Wilson | 31 | Head | Drayman-Clerk | Kansas |
| 10 | Gladys J. Wilson | 23 | Wife | Housewife | Idaho |
| 11 | George Betschart | 45 | Head | Millhand | Switzerland |
| 12 | Anna Betschart | 38 | Wife | Housewife | Switzerland |
| 13 | R. J. Betschart | 26 | Head | Truck Driver | Denmark |
| 14 | Mary Betschart | 26 | Wife | Clerk | Missouri |
| 15 | Arthur M. Williams | 31 | Head | Salesman | Ohio |
| 16 | Ira M. Williams | 28 | Wife | — | Ohio |
| 17 | Irma Bliss | 21 | Head | — | California |
| 18 | Benjamin Nissen | 40 | Head | Service Man | California |
| 19 | Lillian Nissen | 38 | Wife | Housewife | California |
| 20 | James Nissen | 56 | Head | Merchant | Denmark |
| 21 | Anna Nissen | 56 | Wife | — | Denmark |
| 22 | James Nissen | 17 | Son | — | California |
| 23 | Anna Nissen | 13 | Daughter | — | California |
| 24 | Lillian Nissen | 15 | Daughter | — | California |
| 25 | Thomas H. Nissen | 10 | Son | — | California |
| 26 | Arthur Nissen | 8 | Son | — | California |
| 27 | Robert Nissen | 6 | Son | — | California |
| 28 | Richard Nissen | 4 | Son | — | California |
| 29 | Donald Nissen | 2 | Son | — | California |
| 30 | Paul B. Nissen | 37 | Head | Truck Driver | California |
| 31 | Gladys Nissen | 33 | Wife | Housewife | California |
| 32 | Phyllis Nissen | 17 | Daughter | — | California |
| 33 | Phyllis Nissen | 6 | Daughter | — | California |
| 34 | Ada Andrews | 73 | Head | Housewife | Maine |
| 35 | Alva Beis | 74 | Head | Salesman | Kansas |
| 36 | Ethel M. Beis | 33 | Wife | Housewife | Iowa |
| 37 | Harold Smith | 29 | Head | Moulder | Scotland |
| 38 | Edith Smith | 29 | Wife | Housewife | England |
| 39 | George A. Harris | 50 | Head | Printer | Missouri |
| 40 | Gertrude W. Harris | 45 | Wife | Housewife | Texas |
| 41 | Richard J. Harris | 23 | Son | Apprentice | Texas |
| 42 | John J. Mulligan THIS PERSON | 38 | Head | Hostler | Ireland |
| 43 | Elizabeth Mulligan | 34 | Wife | Housewife | Ireland |
| 44 | Betty Mulligan | 6 | Daughter | — | California |
| 45 | Rita Mulligan | 5 | Daughter | — | California |
| 46 | James Mone | 37 | Brother-in-law | Laborer | Ireland |
| 47 | Robert Knopf | 44 | Head | Shop Man | North Ireland |
| 48 | Susan Knopf | 48 | Sister | Domestic | Northern Ireland |
| 49 | Michael Nolan | 54 | Head | Boiler Maker | Kentucky |
| 50 | Annie G. Nolan | 46 | Wife | Housewife | California |
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)