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Harold Martin — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cuyahoga, Ohio
Our Model Tree links this Harold Martin across the 1920, 1930 and 1940 US Censuses in Cuyahoga, Ohio (XGBoost, ~Confirmed), with identified parents John & Mary — first a son (b.~1919), then head of a 5-person household.
Age 11
b. ~1919
Male
Son
Born: Ohio
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cuyahoga, Ohio |
| Surname | Martin |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Cleveland City |
| Est. Birth Year | ~1919 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Louise Martin | Daughter | — | 15 | ~1915 |
| John Martin | Son | — | 5 | ~1925 |
| Rosina Martin | Other | — | 42 | ~1888 |
| John Martin | Head | — | 44 | ~1886 |
| Harold Martin | Son | — | 11 | ~1919 |
Census Appearances
1920
Cuyahoga, Ohio
Son, age 1
Cuyahoga, Ohio · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Cuyahoga, Ohio
Son, age 11
Cuyahoga, Ohio · implied b. ~1919 — 5 household members
| Surname | Martin |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Cuyahoga-County, Ohio
Son, age 22
Cuyahoga-County, Ohio · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Morton |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cleveland City of |
| 1935 Residence (County) | Cuyahoga |
| Occupation | Jumper |
| Industry | Delivery Co. |
| Class of Worker | PW |
| Hours Worked | 76 |
| Income (1939) | 702 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Harold 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 mother Mary Morton (~0.92 confidence) and father Harmon Martin (~0.92 confidence) and mother Florence Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Martin
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Mary Morton
b. ~1891
Source mother
● Household
· direct · ~0.92
Father
Harmon Martin
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Florence Martin
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Martin
Son · 1930 · age 11 · b. ~1919 · Ohio
★ You are viewing this record
Sibling
John Martin
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Martin
Sibling · 1930 · age 15
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 — Cuyahoga, Ohio
Open full size
1930 US Federal Census — Cuyahoga, Ohio
Page Contents
50 people indexed on this census page (ia:1930:ohiocensus00reel1782:1139)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alfred Hansen | 32 | Head | Painter | Denmark |
| 2 | Helga Pyka Hansen | 25 | Wife-H | — | Denmark |
| 3 | Else Pyka Hansen | 0 | daughter | — | Ohio |
| 4 | Bernhard Bruening | 50 | Head | Glazer | Ohio |
| 5 | Frances Bruening | 49 | Wife-H | — | Ohio |
| 6 | Arthur Bruening | 24 | Son | Glazer | Ohio |
| 7 | Gertrude Bruening | 20 | daughter | Sales Lady | Ohio |
| 8 | Genevive Bruening | 16 | daughter | Sales Lady | Ohio |
| 9 | John T Martin | 44 | Head | Machinist | Switzerland |
| 10 | Rosina Martin | 42 | Wife-H | — | Ohio |
| 11 | Louise Martin | 15 | daughter | — | Ohio |
| 12 | Harold Martin THIS PERSON | 11 | Son | — | Ohio |
| 13 | John Jr. Martin | 5 | Son | — | Ohio |
| 14 | Frank Gibbons | 31 | Head | Carpenter | Ohio |
| 15 | Anna Gibbons | 31 | Wife-H | — | Ohio |
| 16 | Mary Rose Gibbons | 8 | daughter | — | Ohio |
| 17 | Frank Gibbons | 7 | Son | — | Ohio |
| 18 | Rita Gibbons | 6 | daughter | — | Ohio |
| 19 | Anthony Gibbons | 4 | Son | — | Ohio |
| 20 | John Gibbons | 2 | Son | — | Ohio |
| 21 | William Gibbons | 0 | Son | — | Ohio |
| 22 | Patrick Brosnan | 42 | Head | Steel Worker | Irish Free State |
| 23 | Mary Brosnan | 32 | Wife-H | — | Ohio |
| 24 | Margaret Brosnan | 4 | daughter | — | Ohio |
| 25 | Edward Mcguirk | 40 | Head | Salesman | Ohio |
| 26 | Gertrude Mcguirk | 34 | Wife-H | — | Ohio |
| 27 | Edward Mcguirk | 9 | Son | — | Ohio |
| 28 | Daniel Mcguirk | 7 | Son | — | Ohio |
| 29 | Robert Mcguirk | 5 | Son | — | Ohio |
| 30 | Richard Mcguirk | 2 | Son | — | Ohio |
| 31 | Donald Mcguirk | 0 | Son | — | Ohio |
| 32 | Charles Geiger | 49 | Head | Foreman | Ohio |
| 33 | Barbra Geiger | 46 | Wife-H | — | Ohio |
| 34 | William Geiger | 23 | Son | Tool Maker | Ohio |
| 35 | Raymond Geiger | 21 | Son | Draftsman | Ohio |
| 36 | Joseph Kennedy | 33 | Head | Police Sergeant | Ohio |
| 37 | Veronica Kennedy | 35 | Wife-H | Stenographer | Ohio |
| 38 | John H Wolfe | 55 | Head | Laborer | Illinois |
| 39 | Sonia Wolfe | 43 | Wife-H | — | Ohio |
| 40 | Mildred Wolfe | 17 | daughter | — | Illinois |
| 41 | Howard Wolfe | 15 | Son | — | Ohio |
| 42 | Margaret Wolfe | 13 | daughter | — | Ohio |
| 43 | Alice Wolfe | 11 | daughter | — | Ohio |
| 44 | Doris Wolfe | 10 | daughter | — | Ohio |
| 45 | Amy Wolfe | 9 | daughter | — | Ohio |
| 46 | Raymond Wolfe | 7 | Son | — | Ohio |
| 47 | Clarence Wolfe | 5 | Son | — | Ohio |
| 48 | Arlean Wolfe | 3 | daughter | — | Ohio |
| 49 | Arnold Wolfe | 1 | Son | — | Ohio |
| 50 | Arthur Standen | 44 | Head | Salesman | Ohio |
Pedigree Summary
Harold + 2 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)