RC
Ralph Clark — 1930 US Census Record
Model Tree available1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Ralph Clark across the 1900, 1910, 1920 and 1930 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed), with identified parents Fred & Minnie — first a head (b.~1889), then head of a 5-person household.
Age 41
b. ~1889
Male
Head
Born: New York
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Clark |
| Given Name | Ralph M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | New York |
| Age at First Marriage | 27 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Additional Details | |
| Occupation | Plumber |
| Industry | Own business |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | $5500 |
| Radio Set | R |
| Veteran | No |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Plumber |
| Township / Ward | Coraopolis Borough |
| Est. Birth Year | ~1889 |
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 Ralph | Age | Birth yr |
|---|---|---|---|---|
| Mabel Clark | Other | — | 41 | ~1889 |
| Theresa Mcclumpha | Other | — | 73 | ~1857 |
| Ross Clark | Son | — | 12 | ~1918 |
| Merle Clark | Son | — | 8 | ~1922 |
| Ralph Clark | Head | — | 41 | ~1889 |
Census Appearances
1900
Allegheny, Pennsylvania
Son, age 11
Allegheny, Pennsylvania · implied b. ~1889 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Ralph M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| Birth Month | Mar |
| Birth Year | 1889 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | at School |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1910
Allegheny, Pennsylvania
Son, age 21
Allegheny, Pennsylvania · implied b. ~1889 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Ralph M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Plumber |
| Industry | Plumbing Shop |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1920
Allegheny, Pennsylvania
Head, age 30
Allegheny, Pennsylvania · implied b. ~1890 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Ralph M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Plumber |
| Industry | Plumbing Business |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Allegheny, Pennsylvania
Head, age 41
Allegheny, Pennsylvania · implied b. ~1889 — 5 household members
| Surname | Clark |
| Given Name | Ralph M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | New York |
| Age at First Marriage | 27 |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Plumber |
| Industry | Own business |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | $5500 |
| Radio Set | R |
| Veteran | No |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Ralph Clark across 4 US Census years (1900, 1910, 1920 and 1930) in Allegheny, Pennsylvania, using XGBoost record linkage. Identified parents: father Fred Clark (~0.92 confidence) and mother Minnie Clark (~0.92 confidence) and mother Myna Clark (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Clark
b. ~1859
Source father
● Household
· direct · ~0.92
Mother
Minnie Clark
b. ~1863
Source mother
● Household
· direct · ~0.92
Mother
Myna Clark
b. ~1861
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ralph Clark
Head · 1930 · age 41 · b. ~1889 · Pennsylvania
★ 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 — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel1962:0071)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ottie H. Richey | 34 | Head | Repairman | Pennsylvania |
| 52 | Pearl Richey | 34 | Wife-H | — | Pennsylvania |
| 53 | Verna Richey | 12 | Daughter | — | Pennsylvania |
| 54 | Jessie Richey | 11 | Daughter | — | Pennsylvania |
| 55 | Walter Leedon | 28 | Brother-in-law | Machinist | Pennsylvania |
| 56 | Virginia Leedon | 6 | Niece | — | California |
| 57 | George W. Drake | 49 | Head | Hoist Engineer | Ohio |
| 58 | Joyce Drake | 45 | Wife-H | — | West Virginia |
| 59 | Russell Campbell | 34 | Head | Carpenter | Pennsylvania |
| 60 | Helen Campbell | 34 | Wife-H | — | Pennsylvania |
| 61 | Rayburn Campbell | 9 | Son | — | Pennsylvania |
| 62 | Elsa Campbell | 7 | Daughter | — | Pennsylvania |
| 63 | Edward Floyd | 57 | Uncle | Laborer | Pennsylvania |
| 64 | Joseph Geiger | 45 | Head | Molder | Burgenland (Austria) |
| 65 | Teresa Geiger | 43 | Wife-H | — | Burgenland (Austria) |
| 66 | Frank Geiger | 23 | Son | Ironmaker | Burgenland (Austria) |
| 67 | John Sentz | 33 | Head | Laborer | Germany |
| 68 | Elizabeth Sentz | 27 | Wife-H | — | Czechoslovakia |
| 69 | Walter Sentz | 6 | Son | — | Pennsylvania |
| 70 | Oscar Miller | 30 | Roomer | Salesman | Ohio |
| 71 | Herman Marshall | 19 | Roomer | Salesman | Ohio |
| 72 | Wilbert Marshall | 23 | Head | Attendant | Ohio |
| 73 | Thelma G. Marshall | 21 | Wife-H | Operator | Pennsylvania |
| 74 | Alfred Ross | 26 | Head | Trucker | Tennessee |
| 75 | Wilma Ross | 26 | Wife-H | — | Tennessee |
| 76 | Lela Ross | 4 | Daughter | — | Pennsylvania |
| 77 | Lorna Ross | 2 | Daughter | — | Tennessee |
| 78 | Ralph Ross | 20 | Brother | Farmer | Tennessee |
| 79 | Roy Ross | 28 | Brother | Machine Operator | Tennessee |
| 80 | Paul May | 21 | Roomer | Laborer | Tennessee |
| 81 | Walter May | 45 | Roomer | Laborer | Tennessee |
| 82 | Felix Blair | 21 | Roomer | Time Keeper | Tennessee |
| 83 | James Greenaway | 35 | Roomer | Yardman | Tennessee |
| 84 | Blaine Quinn | 19 | Roomer | Machine Operator | Tennessee |
| 85 | Sandra J. Rachel | 78 | Head | — | Pennsylvania |
| 86 | Nancy J. Boyd | 56 | Daughter | — | Pennsylvania |
| 87 | George W. Surls | 33 | Head | Partner | Pennsylvania |
| 88 | Mary Surls | 29 | Wife-H | — | Pennsylvania |
| 89 | Arthur Schofield | 19 | Brother-in-law | Chipper | Pennsylvania |
| 90 | Joseph Shaginaw | 37 | Head | Cost Clerk | Pennsylvania |
| 91 | Melinda Shaginaw | 25 | Wife-H | — | Pennsylvania |
| 92 | Donald Shaginaw | 5 | Son | — | Pennsylvania |
| 93 | Roy Shaginaw | 4 | Son | — | Pennsylvania |
| 94 | Ralph M. Clark THIS PERSON | 41 | Head | Plumber | New York |
| 95 | Mabel Clark | 41 | Wife-H | — | Pennsylvania |
| 96 | Ross Clark | 12 | Son | — | Pennsylvania |
| 97 | Merle Clark | 8 | Son | — | Pennsylvania |
| 98 | Theresa Mcclumpha | 73 | Mother-in-law | — | Pennsylvania |
| 99 | William Culley | 42 | Head | Laborer | West Virginia |
| 100 | Ivy Culley | 40 | Wife-H | — | West Virginia |
Pedigree Summary
Ralph
Gen 1 · 3 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)