RJ
Robert Johnston — 1930 US Census Record
Model Tree available1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Robert Johnston across the 1910, 1920 and 1930 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed), with identified parents Fred & Lill — first a son (b.~1908), then head of a 3-person household.
Age 22
b. ~1908
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Johnston |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Dormont Borough |
| Est. Birth Year | ~1908 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Charles Johnston | Head | — | 50 | ~1880 |
| Robert Johnston | Son | — | 22 | ~1908 |
| Annie Johnston | Spouse | — | 50 | ~1880 |
Census Appearances
1910
Allegheny, Pennsylvania
Son, age 4
Allegheny, Pennsylvania · implied b. ~1906 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Son, age 12
Allegheny, Pennsylvania · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 22
Allegheny, Pennsylvania · implied b. ~1908 — 3 household members
| Surname | Johnston |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Robert Johnston across 3 US Census years (1910, 1920 and 1930) in Allegheny, Pennsylvania, using XGBoost record linkage. Identified parents: father Fred Johnston (~0.92 confidence) and mother Lill Johnston (~0.92 confidence) and mother Annie Johnston (~0.92 confidence) and father Charles Johnston (~0.92 confidence) and mother Jennie Johnston (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Johnston
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Lill Johnston
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Annie Johnston
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Charles Johnston
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Jennie Johnston
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Johnston
Son · 1930 · age 22 · b. ~1908 · 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:fifteenthcensus00reel1962:0368)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Laura Mclean | 69 | Sister | None | West Virginia |
| 2 | H. E. Mcvay | 56 | Head | Bookkeeper | Pennsylvania |
| 3 | Marion Mcvay | 56 | Wife | None | Pennsylvania |
| 4 | Theodore W. Toelman | 35 | Head | Salesman | New Jersey |
| 5 | Gertrude Toelman | 34 | Wife | None | Pennsylvania |
| 6 | John Long | 20 | Brother-in-law | None | New Jersey |
| 7 | Henry Hueter | 54 | Head | Chief Steward | France |
| 8 | Rose Hueter | 52 | Wife | None | France |
| 9 | Marcelle Hueter | 18 | Daughter | None | Pennsylvania |
| 10 | Raymond Hueter | 17 | Son | Cook | Pennsylvania |
| 11 | Paul Ruhlmann | 50 | Brother-in-law | Waiter | France |
| 12 | Le Roy Noss | 39 | Head | Accountant | Pennsylvania |
| 13 | Lillian Noss | 30 | Wife | None | Pennsylvania |
| 14 | George Mcalister | 58 | Head | Superintendent | North Ireland |
| 15 | Alice Mcalister | 49 | Wife | None | North Ireland |
| 16 | Robert G. Mcalister | 21 | Son | None | Pennsylvania |
| 17 | Mary S. Mcalister | 14 | Daughter | None | Pennsylvania |
| 18 | Helen Cooper | 60 | Roomer | Foot Mail | Pennsylvania |
| 19 | E. H. Arnold | 46 | Head | Salesman | Pennsylvania |
| 20 | Susan Arnold | 46 | Wife | None | Pennsylvania |
| 21 | Richard Arnold | 20 | Son | None | Pennsylvania |
| 22 | Betty Arnold | 9 | Daughter | None | Pennsylvania |
| 23 | H. D. Largue | 34 | Head | Sales Manager | Ohio |
| 24 | Ruth Largue | 34 | Wife | None | Pennsylvania |
| 25 | Doris Largue | 9 | Daughter | None | Pennsylvania |
| 26 | Ruth Largue | 3 | Daughter | None | Pennsylvania |
| 27 | E. F. Cypher | 60 | Head | Credit Manager | New York |
| 28 | Mary P. Cypher | 59 | Wife | None | New York |
| 29 | Alice Cypher | 21 | Daughter | None | New York |
| 30 | A. G. Anderson | 30 | Head | Manager | Pennsylvania |
| 31 | Wade Anderson | 30 | Wife | None | Pennsylvania |
| 32 | Robert Anderson | 9 | Son | None | Pennsylvania |
| 33 | Norma Anderson | 6 | Daughter | None | Pennsylvania |
| 34 | Harry Christman | 62 | Head | Printer Supplies | Pennsylvania |
| 35 | Tessa Christman | 60 | Wife | None | Germany |
| 36 | Cecil Roberts | 35 | Head | Salesman | Ohio |
| 37 | Mary Roberts | 35 | Wife | None | Ohio |
| 38 | Carol Roberts | 2 | Daughter | None | Ohio |
| 39 | Roane Roberts | 1 | Son | None | Ohio |
| 40 | Jessie Scott | 62 | Head | None | Pennsylvania |
| 41 | Hollis J. Scott | 22 | Son | Secretary | New York |
| 42 | Lewis H. Mullen | 23 | Son-in-law | Loss Adjuster | Pennsylvania |
| 43 | Elsie Mullen | 25 | Daughter | None | New York |
| 44 | L. J. Brown | 50 | Head | Agent | Pennsylvania |
| 45 | Ada Brown | 45 | Wife | None | Pennsylvania |
| 46 | Alice Brown | 20 | Daughter | None | Pennsylvania |
| 47 | Taylor D. Salagiver | 23 | Step Son | Welder | Pennsylvania |
| 48 | Charles Johnston | 50 | Head | Treasurer | Pennsylvania |
| 49 | Annie Johnston | 50 | Wife | None | Pennsylvania |
| 50 | Robert Johnston THIS PERSON | 22 | Son | None | Pennsylvania |
Pedigree Summary
Robert
Gen 1 · 5 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)