JM
James Martin — 1930 US Census Record
Model Tree available1930 United States Federal Census · Dubuque, Iowa
Our Model Tree links this James Martin across the 1910, 1920 and 1930 US Censuses in Dubuque, Iowa (XGBoost, ~Confirmed), with identified parents Edward & Pearl — first a son (b.~1909), then head of a 9-person household.
Age 21
b. ~1909
Male
Son
Born: Iowa
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Dubuque, Iowa |
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Laborer |
| Industry | Bridge |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | City Of Dubuque |
| Est. Birth Year | ~1909 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Helen Martin | Daughter | — | 17 | ~1913 |
| Pearl Martin | Head | — | 57 | ~1873 |
| Albert Coleman | Other | — | 21 | ~1909 |
| Adere Mason | Other | — | 11 | ~1919 |
| Lee Martin | Other | — | 38 | ~1892 |
| Barbara Martin | Other | — | ~1930 | |
| Edward Mimbach | Other | — | 9 | ~1921 |
| Ida Martin | Other | — | 18 | ~1912 |
| James Martin | Son | — | 21 | ~1909 |
Census Appearances
1910
Dubuque, Iowa
Son, age 1
Dubuque, Iowa · implied b. ~1909 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Dubuque, Iowa
Son, age 10
Dubuque, Iowa · implied b. ~1910 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Mulatto |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Dubuque, Iowa
Son, age 21
Dubuque, Iowa · implied b. ~1909 — 9 household members
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Bridge |
| Class of Worker | W |
| 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 Martin across 3 US Census years (1910, 1920 and 1930) in Dubuque, Iowa, using XGBoost record linkage. Identified parents: father Edward Martin (~0.92 confidence) and mother Pearl Martin (~0.92 confidence) and mother Pearl Martin (~0.92 confidence) and mother Pearl Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edward Martin
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Pearl Martin
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Pearl Martin
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Pearl Martin
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Martin
Son · 1930 · age 21 · b. ~1909 · Iowa
★ You are viewing this record
Sibling
Helen Martin
Sibling · 1930 · age 17
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:iowacensus00reel653:0997)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Herman Spahill | 70 | Head | — | Iowa |
| 52 | Ida Spahill | 72 | Wife | — | Iowa |
| 53 | Ernest Seitz | 37 | Head | — | Iowa |
| 54 | Carrie Seitz | 32 | Wife-H | Domestic | Iowa |
| 55 | Robert Seitz | 3 | Son | — | Iowa |
| 56 | Clarence Seitz | 2 | Son | — | Iowa |
| 57 | Florence Seitz | 0 | Daughter | — | Iowa |
| 58 | Elsie Schueller | 41 | Head | Presser | Minnesota |
| 59 | Harlan Schueller | 15 | Son | — | Iowa |
| 60 | Harriet Schueller | 12 | Daughter | — | Iowa |
| 61 | George Schueller | 8 | Son | — | Iowa |
| 62 | Lorraine Schueller | 5 | Daughter | — | Iowa |
| 63 | Margaret Strong | 69 | Mother | — | Minnesota |
| 64 | James Hochberg | 34 | Head | Laborer | Iowa |
| 65 | Bertha Hochberg | 32 | Wife-H | — | Iowa |
| 66 | Clarence Hochberg | 7 | Son | — | Iowa |
| 67 | Rose M. Hochberg | 2 | Daughter | — | Iowa |
| 68 | Pearl Martin | 57 | Head | Laundress | Iowa |
| 69 | Helen Martin | 17 | Daughter | Servant | Iowa |
| 70 | Edward Mimbach | 9 | Grandson | — | Iowa |
| 71 | Adere Mason | 11 | Granddaughter | — | Colorado |
| 72 | James Martin THIS PERSON | 21 | Son | Laborer | Iowa |
| 73 | Ida Martin | 18 | Daughter-in-law | — | Alabama |
| 74 | Barbara Martin | 0 | Granddaughter | — | Iowa |
| 75 | Lee Martin | 38 | Lodger | Shoe Shiner | Alabama |
| 76 | Albert Coleman | 21 | Lodger | Porter | Mississippi |
| 77 | Henrietta Velbers | 70 | Head | Cook | Illinois |
| 78 | John Greene | 29 | Lodger | Moulder | Iowa |
| 79 | Elizabeth Valentine | 32 | Lodger | Waitress | Illinois |
| 80 | Gladys Wilson | 42 | Lodger | Waitress | Mississippi |
| 81 | Fred Cashman | 33 | Lodger | Porter | Mississippi |
| 82 | Catherine Collins | 70 | Head | — | Wisconsin |
| 83 | Bernice Collins | 38 | Daughter | — | Iowa |
| 84 | Jennie Collins | 30 | Daughter | — | Iowa |
| 85 | Mary Walsh | 65 | Head | — | Wisconsin |
| 86 | Albert Brewer | 50 | Head | Fireman | Wisconsin |
| 87 | Susie Brewer | 50 | Wife-H | — | Wisconsin |
| 88 | Evelyn Brewer | 19 | Daughter | Stenographer | Wisconsin |
| 89 | Kathleen Brewer | 13 | Daughter | — | Iowa |
| 90 | Joseph Ley | 47 | Head | Painting | Iowa |
| 91 | Emma Ley | 38 | Wife-H | — | Iowa |
| 92 | Marie Ley | 14 | Daughter | — | Iowa |
| 93 | Joseph Ley | 13 | Son | — | Iowa |
| 94 | Charles Ley | 12 | Son | — | Iowa |
| 95 | Arleen Ley | 9 | Daughter | — | Iowa |
| 96 | Harold Ley | 8 | Son | — | Iowa |
| 97 | Florence Ley | 6 | Daughter | — | Iowa |
| 98 | Margaret Rooney | 62 | Head | — | Wisconsin |
| 99 | Clarence Schadler | 34 | Head | Chief Clerk | Illinois |
| 100 | Margaret Schadler | 34 | Wife-H | Saleslady | Iowa |
Related Census Records
Pedigree Summary
James + 1 sibling
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)