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James Mulligan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Dubuque, Iowa
Our Model Tree links this James Mulligan across the 1920 and 1930 US Censuses in Dubuque, Iowa (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 11-person household.
Age 10
b. ~1920
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Dubuque, Iowa |
| Surname | Mulligan |
| Given Name | James P. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Dubuque City |
| Est. Birth Year | ~1920 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Marjorie Mulligan | Daughter | — | 2 | ~1928 |
| Lena Mulligan | Spouse | — | 38 | ~1892 |
| Francis Mulligan | Son | — | 7 | ~1923 |
| James Mulligan | Son | — | 10 | ~1920 |
| Ruth Mulligan | Daughter | — | 3 | ~1927 |
| James Mulligan | Head | — | 41 | ~1889 |
| John Mulligan | Son | — | 8 | ~1922 |
| Susan Mulligan | Daughter | — | ~1930 | |
| Anselm Mulligan | Daughter | — | 12 | ~1918 |
| Rosemary Mulligan | Daughter | — | 5 | ~1925 |
| Rita Mulligan | Daughter | — | 4 | ~1926 |
Census Appearances
1920
Dubuque, Iowa
Son, age
Dubuque, Iowa · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mulligan |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Dubuque, Iowa
Son, age 10
Dubuque, Iowa · implied b. ~1920 — 11 household members
| Surname | Mulligan |
| Given Name | James P. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 James Mulligan across 2 US Census years (1920 and 1930) in Dubuque, Iowa, using XGBoost record linkage.
Show:
This person
Anchor record
James Mulligan
Son · 1930 · age 10 · b. ~1920 · Iowa
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Sibling
John Mulligan
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Susan Mulligan
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosemary Mulligan
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anselm Mulligan
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Mulligan
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Mulligan
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mulligan
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Mulligan
Sibling · 1930 · age 3
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
1930 US Federal Census — Dubuque, Iowa
Open full size
1930 US Federal Census — Dubuque, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel653:0812)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bart Kane | 34 | Head | Agent | Iowa |
| 2 | Pearl Kane | 35 | Wife | None | Iowa |
| 3 | James Kane | 8 | son | None | Iowa |
| 4 | John Kane | 5 | son | None | Iowa |
| 5 | June Kane | 6 | daughter | None | Iowa |
| 6 | Barbara Kane | 4 | daughter | None | Iowa |
| 7 | Denyse Kane | 1 | daughter | None | Iowa |
| 8 | William O'Brien | 50 | Head | None | Irish Free State |
| 9 | Genevieve O'Brien | 50 | wife | None | Iowa |
| 10 | Kathleen O'Brien | 56 | daughter | Nurse | Iowa |
| 11 | Mary O'Brien | 54 | daughter | Sales Lady | Iowa |
| 12 | James F. O'Brien | 71 | Head | Clergyman | Irish Free State |
| 13 | Kathryn O'Brien | 65 | sister | Housekeeper | Irish Free State |
| 14 | Francis Joseph O'Brien | 29 | nephew | Clergyman | Iowa |
| 15 | Williams Mary O'Brien | 65 | housekeeper | Housekeeper | Iowa |
| 16 | Mary L. Connolly | 60 | Head | Seamstress | Iowa |
| 17 | Anna Schoeffle | 55 | sister | None | Iowa |
| 18 | Harold G. Schoeffle | 25 | nephew | Bookkeeper | Iowa |
| 19 | Kipp Warren Schoeffle | 16 | nephew | None | Iowa |
| 20 | Emil Bundt | 40 | Head | Brick Layer | Iowa |
| 21 | Lena Bundt | 41 | wife | None | Iowa |
| 22 | Eldon Bundt | 15 | son | Meat Cutter | Iowa |
| 23 | Bernice Bundt | 13 | son | None | Iowa |
| 24 | Kenneth Bundt | 8 | son | None | Iowa |
| 25 | Marjorie Bundt | 1 | daughter | None | Iowa |
| 26 | Fredrick Vosberg | 51 | Head | Laborer | Iowa |
| 27 | Catherine Vosberg | 54 | wife | None | Illinois |
| 28 | Anna Armbruster | 46 | sister-in-law | None | Iowa |
| 29 | James J. Mulligan | 41 | Head | Post Office Clerk | Iowa |
| 30 | Lena Mulligan | 38 | wife | None | Iowa |
| 31 | Anselm Mulligan | 12 | daughter | None | Iowa |
| 32 | James P. Mulligan THIS PERSON | 10 | son | None | Iowa |
| 33 | John Mulligan | 8 | son | None | Iowa |
| 34 | Francis M. Mulligan | 7 | son | None | Iowa |
| 35 | Rosemary Mulligan | 5 | daughter | None | Iowa |
| 36 | Rita J. Mulligan | 4 | daughter | None | Iowa |
| 37 | Ruth Ann Mulligan | 3 | daughter | None | Iowa |
| 38 | Marjorie J. Mulligan | 2 | daughter | None | Iowa |
| 39 | Susan Mulligan | 0 | daughter | None | Iowa |
| 40 | A. G. Kostka | 29 | Head | Cabinet Maker | Illinois |
| 41 | Annette Kostka | 29 | wife | None | Illinois |
| 42 | Maralyn Kostka | 3 | daughter | None | Illinois |
| 43 | William Keetz | 36 | Head | Barber | Iowa |
| 44 | Margaret C. Keetz | 34 | wife | Radio Repair | Iowa |
| 45 | John Keelen | 65 | father-in-law | Radio Repair | Germany |
| 46 | Constance Keelen | 64 | mother-in-law | None | Europe N.S. |
| 47 | A. N. Tumbas | 39 | Head | Cabinet Maker | Belgium |
| 48 | Elizabeth Tumbas | 40 | wife | None | Iowa |
| 49 | Constance Tumbas | 8 | daughter | None | Iowa |
| 50 | Betty Jane Tumbas | 6 | daughter | None | Iowa |
Related Census Records
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)