JC
James Cooper — 1930 US Census Record
Model Tree available1930 United States Federal Census · Duval, Florida
Our Model Tree links this James Cooper across the 1900, 1910, 1920 and 1930 US Censuses in Duval, Florida (XGBoost, ~Confirmed), with identified parents Charles & Rosa — first a head (b.~1888), then head of a 8-person household.
Age 42
b. ~1888
Male
Head
Born: Florida
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Duval, Florida |
| Surname | Cooper |
| Given Name | James P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Florida |
| Age at First Marriage | 21 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Florida |
| Additional Details | |
| Occupation | Lawyer |
| Industry | Real Estate Development |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25.00 |
| Radio Set | R |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Occupation | Lawyer |
| Township / Ward | Jacksonville City |
| Est. Birth Year | ~1888 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Cooper | Head | — | 42 | ~1888 |
| Jessie Monroe | Other | — | 51 | ~1879 |
| Louise Pearce | Other | — | 21 | ~1909 |
| Mary Pearce | Other | — | 19 | ~1911 |
| Agnes Cooper | Other | — | 42 | ~1888 |
| Robert Isom | Other | — | 23 | ~1907 |
| Adolph Pearce | Other | — | 29 | ~1901 |
| Charles Cooper | Son | — | 18 | ~1912 |
Census Appearances
1900
Duval, Florida
Son, age 13
Duval, Florida · implied b. ~1887 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | James G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Florida |
| Birth Month | Nov |
| Birth Year | 1887 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Florida |
| Occupation | at School |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1910
Duval, Florida
Son, age 22
Duval, Florida · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | James J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Florida |
| Occupation | Lawyer |
| Industry | General Practice |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1920
Duval, Florida
Head, age 31
Duval, Florida · implied b. ~1889 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | James D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Florida |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Florida |
| Occupation | Lawyer |
| Industry | Office |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Duval, Florida
Head, age 42
Duval, Florida · implied b. ~1888 — 8 household members
| Surname | Cooper |
| Given Name | James P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Florida |
| Age at First Marriage | 21 |
| Father's Birthplace | Georgia |
| Mother's Birthplace | Florida |
| Occupation | Lawyer |
| Industry | Real Estate Development |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25.00 |
| Radio Set | R |
| 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 Cooper across 4 US Census years (1900, 1910, 1920 and 1930) in Duval, Florida, using XGBoost record linkage. Identified parents: father Charles Cooper (~0.92 confidence) and mother Rosa Cooper (~0.92 confidence) and father Chas Cooper (~0.92 confidence) and mother Rosa Cooper (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Cooper
b. ~1856
Source father
● Household
· direct · ~0.92
Mother
Rosa Cooper
b. ~1861
Source mother
● Household
· direct · ~0.92
Father
Chas Cooper
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Rosa Cooper
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Cooper
Head · 1930 · age 42 · b. ~1888 · Florida
★ You are viewing this record
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
45 people indexed on this census page (ia:1930:15thcensus312unit:0607)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Callie Driggers | 69 | Sister | — | Alabama |
| 2 | Jack Kramer | 24 | Lodger | Manager | Georgia |
| 3 | Elvia Kramer | 20 | Lodger | — | Georgia |
| 4 | Ronald Kramer | 1 | Lodger | — | Georgia |
| 5 | Nola Mccowan | 24 | Lodger | Operator | Georgia |
| 6 | Francis Goyer | 24 | Lodger | Clerk | Tennessee |
| 7 | Susie Varnader | 46 | Lodger | Sales Lady | Georgia |
| 8 | Ben Smiley | 24 | Servant | Laborer | Georgia |
| 9 | John W. Miller | 27 | Lodger | Bookkeeper | Georgia |
| 14 | James P. Cooper THIS PERSON | 42 | Head | Lawyer | Florida |
| 15 | Agnes M. Cooper | 42 | Wife-H | — | South Carolina |
| 16 | Charles Cooper | 18 | Son | — | Florida |
| 17 | Mary G. Pearce | 19 | Niece | — | South Carolina |
| 18 | Adolph Pearce | 29 | Lodger | Dealer | Rhode Island |
| 19 | Louise Pearce | 21 | Lodger | — | Florida |
| 20 | Robert G. Isom | 23 | Lodger | Agent | Kentucky |
| 21 | Jessie T. Monroe | 51 | Lodger | File Clerk | New York |
| 22 | Harry Heffernan | 50 | Head | Manager | Georgia |
| 23 | Nellie Heffernan | 50 | Wife-H | — | Kansas |
| 24 | Mallory Giddens | 23 | Step-Son | Salesman | Florida |
| 25 | Bertha G. Jones | 43 | Lodger | — | Georgia |
| 26 | Jean Stubbs | 22 | Lodger | Secretary | Georgia |
| 27 | Harry J. Davis | 29 | Lodger | Clerk | Virginia |
| 28 | Robert Sanders | 25 | Lodger | Bookkeeper | Florida |
| 29 | Benjamin Steinberg | 30 | Lodger | Promoter | Georgia |
| 30 | Ida Steinberg | 25 | Lodger | — | Georgia |
| 31 | Turner G. Houston | 26 | Lodger | Bookkeeper | Florida |
| 32 | James Simmons | 25 | Lodger | Bookkeeper | United States |
| 33 | Roland Mainter | 38 | — | Manager | Massachusetts |
| 34 | Mary E. Mainter | 39 | Wife-H | Secretary | Rhode Island |
| 35 | James Stephen Nolan | 53 | Head | — | Indiana |
| 36 | Frances A. Nolan | 25 | Daughter | Librarian | Texas |
| 37 | Katherine Dopley | 28 | Lodger | Waitress | Kentucky |
| 38 | W. F. Gundry | 40 | Lodger | Dealer | Florida |
| 39 | Helen Armstrong | 30 | Lodger | Stenographer | New York |
| 40 | Albert Runder | 30 | Lodger | Bookkeeper | New York |
| 41 | Fred L. Brumage | 63 | Lodger | — | Illinois |
| 42 | Anna L. Brumage | 63 | Lodger | — | Illinois |
| 43 | Fred L. Jr. Brumage | 17 | Lodger | — | Illinois |
| 44 | Mary Brumage | 10 | Lodger | — | Illinois |
| 45 | Jerry Mcgilvray | 20 | Lodger | Servant | Georgia |
| 47 | Herbert Anderson | 70 | Head | Lawyer | Kentucky |
| 48 | Elizabeth Anderson | 68 | Wife-H | — | Indiana |
| 49 | Lawrence Molson | 35 | — | Mechanic | New York |
| 50 | Olivia Molson | 28 | Wife-H | — | North Carolina |
Pedigree Summary
James
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)