JC
James Cooper — 1930 US Census Record
Model Tree available1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this James Cooper across the 1910, 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents Thomas & Mary — first a head (b.~1905), then head of a 4-person household.
Age 25
b. ~1905
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Cooper |
| Given Name | James E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 20 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Carpenter |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 7350 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Carpenter |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1905 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Cooper | Head | — | 25 | ~1905 |
| Mary Cooper | Other | — | 69 | ~1861 |
| James Cooper | Son | — | 1 | ~1929 |
| Ethel Cooper | Spouse | — | 28 | ~1902 |
Census Appearances
1910
Baltimore, Maryland
Son, age 8
Baltimore, Maryland · implied b. ~1902 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
None, Maryland
Son, age 17
None, Maryland · implied b. ~1903 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | James G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Errand boy |
| Industry | Printing |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 25
Baltimore, Maryland · implied b. ~1905 — 4 household members
| Surname | Cooper |
| Given Name | James E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 20 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Carpenter |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 7350 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 3 US Census years (1910, 1920 and 1930) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Cooper (~0.92 confidence) and mother Mary Cooper (~0.92 confidence) and father George Cooper (~0.92 confidence) and mother Emma Cooper (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Cooper
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Mary Cooper
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
George Cooper
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Emma Cooper
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Cooper
Head · 1930 · age 25 · b. ~1905 · Maryland
★ 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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus859unit:0026)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry Culp | 38 | Head | Accountant | Pennsylvania |
| 2 | Esther Culp | 35 | Wife | — | Pennsylvania |
| 3 | George W. Haiter | 71 | Head | Steward | Austria |
| 4 | Nellie Haiter | 52 | Wife | — | New Jersey |
| 5 | Stella Haiter | 23 | Daughter | Instructor | Maryland |
| 6 | Harry E. Beckman | 42 | Head | — | Virginia |
| 7 | Maude E. Beckman | 40 | Wife | Artist | Maryland |
| 8 | Marie Kane | 36 | Boarder | Saleslady | Maryland |
| 9 | Edward C. Clarke | 26 | Head | Office Clerk | Maryland |
| 10 | Agnes Clarke | 29 | Wife | — | Pennsylvania |
| 11 | Edward O. Jr. Clarke | 0 | Son | — | Maryland |
| 12 | Frank J. O'Connor | 41 | Head | Salesman | Maryland |
| 13 | Daisy E. O'Connor | 30 | Wife | — | Maryland |
| 14 | Eleanor O'Connor | 10 | Daughter | — | Maryland |
| 15 | Jack O'Connor | 7 | Son | — | Maryland |
| 16 | Sarah E. Smith | 75 | Mother-in-law | — | Maryland |
| 17 | Donald Wilhide | 29 | Head | Service Station | Maryland |
| 18 | Mamie Wilhide | 28 | Wife | — | Maryland |
| 19 | Walter J. Wiles | 62 | Father-in-law | — | Maryland |
| 20 | Clara A. Wiles | 61 | Mother-in-law | — | Maryland |
| 21 | Clifford G. Fisher | 35 | Head | Clerk | Connecticut |
| 22 | Anita A. Fisher | 29 | Wife | — | Maryland |
| 23 | James W. Lanham | 70 | Father-in-law | — | Maryland |
| 24 | Eliza M. Lanham | 72 | Mother-in-law | — | Maryland |
| 25 | James E. Cooper THIS PERSON | 25 | Head | Carpenter | Maryland |
| 26 | Ethel I. Cooper | 28 | Wife | — | Maryland |
| 27 | James E. Jr. Cooper | 1 | Son | — | Maryland |
| 28 | Mary E. Cooper | 69 | Grandmother | — | Maryland |
| 29 | Matilda J. Washburn | 45 | Head | Manager | Maryland |
| 30 | Margaret Burger | 47 | Sister | — | Germany |
| 31 | Henry E. Dutton | 27 | Head | Manifold Clerk | Maryland |
| 32 | Anne Dutton | 25 | Wife | — | Maryland |
| 33 | Henry D. Dutton | 4 | Son | — | Maryland |
| 34 | Roland W. Dutton | 1 | Son | — | Maryland |
| 35 | Marie C. Ross | 33 | Head | Bookkeeper | Maryland |
| 36 | Angusla W. Ross | 29 | Sister | Bookkeeper | Maryland |
| 37 | Roland W. Wood | 32 | Head | Sheet Metal Worker | Maryland |
| 38 | Lydia Wood | 30 | Wife | — | Maryland |
| 39 | Dorothy L. Wood | 4 | Daughter | — | Maryland |
| 40 | Roland R. Wood | 2 | Son | — | Maryland |
| 41 | George R. Donoho | 39 | Head | Agent | Delaware |
| 42 | Lilian W. Donoho | 36 | Wife | — | Maryland |
| 43 | Carolyn E. Donoho | 7 | Daughter | — | Maryland |
| 44 | George Jr. Donoho | 5 | Son | — | Maryland |
| 45 | Lilian B. Donoho | 3 | Daughter | — | Maryland |
| 46 | Elizabeth W. Donoho | 0 | Daughter | — | Maryland |
| 47 | Henry H. Hensel | 36 | Head | Salesman | Maryland |
| 48 | Margaret Hensel | 32 | Wife | — | Maryland |
| 49 | Margaret Hensel | 8 | Daughter | — | Maryland |
| 50 | Henry H. Jr. Hensel | 3 | Son | — | Maryland |
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)