JM
James Mulligan — 1930 US Census Record
Model Tree available1930 United States Federal Census · Duval, Florida
Our Model Tree links this James Mulligan across the 1920, 1930 and 1940 US Censuses in Duval, Florida (XGBoost, ~Confirmed), with identified parents James & Annie — first a son (b.~1912), then head of a 6-person household.
Age 18
b. ~1912
Male
Son
Born: Florida
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Duval, Florida |
| Surname | Mulligan |
| Given Name | James Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Township / Ward | Jacksonville City |
| Est. Birth Year | ~1912 |
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 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Don Mulligan | Son | — | 15 | ~1915 |
| James Mulligan | Son | — | 18 | ~1912 |
| Irene Mulligan | Daughter | — | 20 | ~1910 |
| James Mulligan | Head | — | 45 | ~1885 |
| Annie Mulligan | Spouse | — | 45 | ~1885 |
| Idelle Mulligan | Daughter | — | 9 | ~1921 |
Census Appearances
1920
Duval, Florida
Son, age 8
Duval, Florida · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Milligan |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Duval, Florida
Son, age 18
Duval, Florida · implied b. ~1912 — 6 household members
| Surname | Mulligan |
| Given Name | James Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Florida |
| Mother's Birthplace | Florida |
| Can Read/Write | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Duval-County, Florida
Son, age 28
Duval-County, Florida · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Milligan |
| Given Name | James W. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | Jacksonville |
| 1935 Residence (County) | Duval |
| Occupation | Operator |
| Industry | Auto Service Station |
| Class of Worker | OA |
| Hours Worked | 72 |
| Income (1939) | 156 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Mulligan (~0.92 confidence) and mother Annie Mulligan (~0.92 confidence) and mother Archie Milligan (~0.92 confidence) and mother Elizabeth Tedder (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Mulligan
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Annie Mulligan
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Archie Milligan
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Tedder
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Mulligan
Son · 1930 · age 18 · b. ~1912 · Florida
★ You are viewing this record
Sibling
Don Mulligan
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Mulligan
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Idelle Mulligan
Sibling · 1930 · age 9
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 — Duval, Florida
Open full size
1930 US Federal Census — Duval, Florida
Page Contents
50 people indexed on this census page (ia:1930:15thcensus314unit:0820)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ophelia Malphurs | 9 | Daughter | — | Georgia |
| 52 | Martina Malphurs | 35 | Amie-in-law | — | Florida |
| 53 | Silas E. Dukes | 62 | Head | Car Repairer | Florida |
| 54 | Nancy A. Dukes | 63 | Wife | — | Florida |
| 55 | Billy R. Dukes | 20 | Son | Pipe Fitter Helper | Florida |
| 56 | William H.B. Blackwell | 27 | Head | Plumber | North Carolina |
| 57 | Annie M. Blackwell | 22 | Wife | — | Florida |
| 58 | Betty J. Blackwell | 3 | Daughter | — | Florida |
| 59 | William H. Blackwell | 1 | Son | — | Florida |
| 60 | Annie Leah Blackwell | 54 | Mother-in-law | — | Florida |
| 61 | Vinnie Bolana | 45 | Head | — | Florida |
| 62 | Ella Bolana | 67 | Aunt | — | Alabama |
| 63 | George A. Stowell | 47 | Head | Gate Tender | Pennsylvania |
| 64 | Gertrude Stowell | 52 | Wife | — | Florida |
| 65 | Robert E. Stowell | 32 | Brother | Truck Driver | Pennsylvania |
| 66 | Mccoy W. Roberts | 18 | Head | Salesman | Ohio |
| 67 | Vineta Roberts | 16 | Wife | — | Florida |
| 68 | Wilbur J. Roberts | 51 | Head | Operator | Virginia |
| 69 | Sherry L. Roberts | 40 | Wife | — | Ohio |
| 70 | Udell Roberts | 16 | Son | — | Ohio |
| 71 | Leola Roberts | 7 | Daughter | — | Florida |
| 72 | Charles A. Milks | 25 | Head | Painter | Missouri |
| 73 | Florence E. Milks | 20 | Wife | — | Massachusetts |
| 74 | Annie L. Milks | 1 | Daughter | — | Montana |
| 75 | Lola E. Milks | 0 | Daughter | — | Iowa |
| 76 | James Mulligan | 45 | Head | Machinist | Florida |
| 77 | Annie Mulligan | 45 | Wife | — | Florida |
| 78 | Irene Mulligan | 20 | Daughter | Operator | Florida |
| 79 | James Jr. Mulligan THIS PERSON | 18 | Son | — | Florida |
| 80 | Don Mulligan | 15 | Son | — | Florida |
| 81 | Idelle Mulligan | 9 | Daughter | — | Florida |
| 82 | Alexander Weldon | 66 | Head | Carpenter | Georgia |
| 83 | Ada Weldon | 68 | Wife | — | Georgia |
| 84 | Emory L. Weldon | 29 | Son | Machine Repairer | Georgia |
| 85 | Henry C. Weldon | 28 | Head | Assembler Parts | Georgia |
| 86 | Mamie L. Weldon | 24 | Wife | — | Georgia |
| 87 | Albert E. Weldon | 4 | Son | — | Florida |
| 88 | Willie C. Weldon | 1 | Son | — | Florida |
| 89 | Albert D. Goodrich | 43 | Head | Wrecking Engineer | Florida |
| 90 | Blanche L. Goodrich | 41 | Wife | — | Florida |
| 91 | Myrtle P. Goodrich | 20 | Daughter | Saleslady | Florida |
| 92 | Leby A. Goodrich | 18 | Son | — | Florida |
| 93 | Ida R. Goodrich | 14 | Daughter | — | Florida |
| 94 | Eva M. Goodrich | 14 | Daughter | — | Florida |
| 95 | James D. Greek | 58 | Head | Plumber | Florida |
| 96 | Bertha Greek | 35 | Wife | — | Florida |
| 97 | Patsy Greek | 14 | Daughter | — | Florida |
| 98 | B. Viola Greek | 10 | Daughter | — | Florida |
| 99 | James D. Jr. Greek | 8 | Son | — | Florida |
| 100 | Carrie Greek | 56 | Mother | — | Florida |
Pedigree Summary
James + 3 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)