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Harry Martin — 1930 US Census Record
Model Tree available1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Harry Martin across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents John & James — first a head (b.~1905), then head of a 3-person household.
Age 25
b. ~1905
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Martin |
| Given Name | Harry M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Laborer |
| Industry | State Road |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Part Of 5Th District |
| 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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Rachel Martin | Daughter | — | 1 | ~1929 |
| Harry Martin | Head | — | 25 | ~1905 |
| Mildred Martin | Other | — | 21 | ~1909 |
Census Appearances
1920
Baltimore, Maryland
Son, age 15
Baltimore, Maryland · implied b. ~1905 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Farm Labor |
| Industry | Working Out |
| 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 — 3 household members
| Surname | Martin |
| Given Name | Harry M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | State Road |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Son, age 35
Baltimore-County, Maryland · implied b. ~1905 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harry R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| 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 Harry Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Martin (~0.92 confidence) and father James Martin (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Martin
b. ~1879
Source father
● Household
· direct · ~0.92
Father
James Martin
b. ~1880
Source father
● Household
· direct · ~0.92
This person
Anchor record
Harry Martin
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:1930:15thcensus845unit:1111)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Luther A. Martin | 50 | Head | Farmer | Maryland |
| 52 | Viola M. Martin | 31 | Wife-H | — | Maryland |
| 53 | Helen V. Martin | 13 | Daughter | — | Maryland |
| 54 | Leah O. Martin | 11 | Daughter | — | Maryland |
| 55 | Harry E. Martin | 27 | Head | Farmer | Maryland |
| 56 | Eva E. Martin | 28 | Wife-H | — | Maryland |
| 57 | Dorothy A. Martin | 4 | Daughter | — | Maryland |
| 58 | Henry L. Martin | 2 | Son | — | Maryland |
| 59 | Hershal S. Martin | 0 | Son | — | Maryland |
| 60 | Horace F. Kelley | 56 | Head | Farmer | Maryland |
| 61 | Mary E. Kelley | 61 | Wife-H | — | Maryland |
| 62 | Clarence E. Baublitz | 37 | Son in law | Farm Laborer | Maryland |
| 63 | Myrtle V. Baublitz | 34 | Daughter | — | Maryland |
| 64 | Vivien E. Baublitz | 5 | Gr. daughter | — | Maryland |
| 65 | Doris H. Baublitz | 3 | Gr. son | — | Maryland |
| 66 | Charles W. Martin | 47 | Head | Farmer | Maryland |
| 67 | Minnie A. Martin | 47 | Wife-H | — | Maryland |
| 68 | Charles W. Jr. Martin | 24 | Son | Clerk | Maryland |
| 69 | Beulah P. Martin | 21 | Daughter | School Teacher | Maryland |
| 70 | Eva F. Martin | 19 | Daughter | Bookkeeper | Maryland |
| 71 | Melva M. Martin | 16 | Daughter | — | Maryland |
| 72 | Herbert A. Rhoten | 40 | Head | Farmer | Maryland |
| 73 | Laura C. Rhoten | 32 | Wife-H | — | Maryland |
| 74 | James N. Rhoten | 15 | Son | Farm Laborer | Maryland |
| 75 | Sadie V. Rhoten | 14 | Daughter | — | Maryland |
| 76 | George H. Rhoten | 12 | Son | Farm Laborer | Maryland |
| 77 | Emma C. Rhoten | 10 | Daughter | — | Maryland |
| 78 | Viola M. Rhoten | 8 | Daughter | — | Maryland |
| 79 | Shadrack H. Cooper | 66 | Head | Hauling | Maryland |
| 80 | Emma M. Cooper | 59 | Wife-H | — | Maryland |
| 81 | Harry M. Martin THIS PERSON | 25 | Head | Laborer | Maryland |
| 82 | Mildred M. Martin | 21 | Wife-H | — | Maryland |
| 83 | Rachel E. Martin | 1 | Daughter | — | Maryland |
| 84 | Wesley Ports | 78 | Head | Farmer | Maryland |
| 85 | Florence A. Ports | 77 | Wife-H | — | Maryland |
| 86 | Andrew J. Schultz | 65 | Head | Farm Laborer | Maryland |
| 87 | Florence O. Schultz | 62 | Wife-H | — | Maryland |
| 88 | L. J. Pierie | 30 | Head | Farmer | Maryland |
| 89 | Gertrude E. Pierie | 24 | Wife-H | — | Maryland |
| 90 | Inez O. Pierie | 7 | daughter | — | Maryland |
| 91 | Melva S. Pierie | 5 | son | — | Maryland |
| 92 | Joseph E. Pierie | 2 | son | — | Maryland |
| 93 | Kenneth H. Pierie | 0 | son | — | Maryland |
| 94 | Charles J. Poole | 44 | Head | Farmer | Maryland |
| 95 | Annie V. Poole | 40 | Wife-H | — | Maryland |
| 96 | Margaret E. Palmer | 21 | daughter | — | Maryland |
| 97 | Carroll E. Poole | 19 | Son in law | Farm Laborer | Maryland |
| 98 | Theodore C. Sparks | 68 | Head | Farmer | Maryland |
| 99 | Laura M. Sparks | 64 | Wife-H | Nurse | Maryland |
| 100 | Elsie D. Sparks | 24 | Daughter | — | Maryland |
Pedigree Summary
Harry
Gen 1 · 2 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)