JI
James Irwin — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this James Irwin across the 1910 and 1920 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1903), then head of a 7-person household.
Age 17
b. ~1903
Male
Son
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | Irwin |
| Given Name | James H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Salesman |
| Industry | Grocery Store |
| Class of Worker | W W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Salesman |
| Township / Ward | Oakdale Borough |
| Est. Birth Year | ~1903 |
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.
7 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| B Irwin | Head | — | 56 | ~1864 |
| James Irwin | Son | — | 17 | ~1903 |
| Nellie Irwin | Daughter | — | 18 | ~1902 |
| Elizabeth Irwin | Spouse | — | 53 | ~1867 |
| James Cutteran | Other | — | 20 | ~1900 |
| Gordon Maple | Other | — | 18 | ~1902 |
| Lloyd Wilson | Other | — | 18 | ~1902 |
Census Appearances
1910
Allegheny, Pennsylvania
Son, age 7
Allegheny, Pennsylvania · implied b. ~1903 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Irwin |
| Given Name | James S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| 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 17
Allegheny, Pennsylvania · implied b. ~1903 — 7 household members
| Surname | Irwin |
| Given Name | James H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Salesman |
| Industry | Grocery Store |
| Class of Worker | W W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 James Irwin across 2 US Census years (1910 and 1920) in Allegheny, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
James Irwin
Son · 1920 · age 17 · b. ~1903 · Pennsylvania
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Sibling
Nellie Irwin
Sibling · 1920 · age 18
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
1920 US Federal Census — Allegheny, Pennsylvania
Open full size
1920 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1528unit:1107)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Margaret L Vaughn | 53 | Sister | — | Pennsylvania |
| 52 | Charles Magee | 58 | Head | Salesman | Pennsylvania |
| 53 | Nana Magee | 59 | Sister | — | Pennsylvania |
| 54 | Mary Magee | 88 | Mother | — | Pennsylvania |
| 55 | Earl G Shaw | 31 | Boarder | Doctor | Pennsylvania |
| 56 | Earl Patterson | 53 | Boarder | Painter | Massachusetts |
| 57 | R. R. Elder | 47 | Head | Lawyer | Pennsylvania |
| 58 | Flora L. Elder | 47 | Wife | — | Pennsylvania |
| 59 | Marion Elder | 16 | Daughter | — | Pennsylvania |
| 60 | Robert R. Elder | 11 | Son | — | Pennsylvania |
| 61 | Mary E. Thompson | 71 | Head | — | Pennsylvania |
| 62 | John A. Markishen | 29 | Son-in-law | Machinist | Russia |
| 63 | Mary E. Markishen | 36 | Daughter | — | Pennsylvania |
| 64 | James M. Thompson | 42 | Son | Laborer | Pennsylvania |
| 65 | Charles B. Markishen | 12 | Grandson | — | Pennsylvania |
| 66 | J. B. Rothchild | 71 | Head | — | England |
| 67 | Annie May Rothchild | 47 | Daughter | — | Pennsylvania |
| 68 | Augusta Zimmerly | 68 | Head | — | Pennsylvania |
| 69 | David A. Brown | 61 | Head | Heater | Scotland |
| 70 | Louisa Brown | 46 | Wife | — | Pennsylvania |
| 71 | Howard Brown | 18 | Son | Rigger | Pennsylvania |
| 72 | James Davidson | 51 | Head | Steward | Pennsylvania |
| 73 | Elizabeth Davidson | 41 | Wife | — | Pennsylvania |
| 74 | Harry Davidson | 21 | Son | Truck Driver | Pennsylvania |
| 75 | Eleanor Davidson | 29 | Daughter | Saleslady | Pennsylvania |
| 76 | Verna Davidson | 10 | Daughter | — | Pennsylvania |
| 77 | Ora Davidson | 3 | Daughter | — | Pennsylvania |
| 78 | Michael Morgan | 21 | Boarder | Truck Driver | Pennsylvania |
| 79 | John G. Biles | 42 | Head | Rigger | Indiana |
| 80 | Mattie Biles | 26 | Wife | — | Missouri |
| 81 | Belle H. Fink | 54 | Head | — | Pennsylvania |
| 82 | John Madison | 21 | Boarder | Steam Fitter | Illinois |
| 83 | John H. Speckman | 29 | Boarder | Steam Fitter | Iowa |
| 84 | P. G. Cothran | 36 | Boarder | Rigger | Arizona |
| 85 | B. C. Irwin | 56 | Head | Doctor | Pennsylvania |
| 86 | Elizabeth A. Irwin | 53 | Wife | — | Pennsylvania |
| 87 | Nellie Irwin | 18 | Daughter | — | Pennsylvania |
| 88 | James H. Irwin THIS PERSON | 17 | Son | Salesman | Pennsylvania |
| 89 | Lloyd L. Wilson | 18 | Boarder | Machinist Helper | Ohio |
| 90 | James Cutteran | 20 | Boarder | Rigger | West Virginia |
| 91 | Gordon Maple | 18 | Boarder | Machinist Helper | Pennsylvania |
| 92 | William S. Sutton | 47 | Head | Carpenter | Pennsylvania |
| 93 | Nettie Sutton | 41 | Wife | — | Pennsylvania |
| 94 | Herbert Sutton | 20 | Son | Carpenter | Pennsylvania |
| 95 | Edward Sutton | 18 | Son | Laborer | Pennsylvania |
| 96 | Gilbert Sutton | 16 | Son | Apprentice For | Pennsylvania |
| 97 | Helen Sutton | 13 | Daughter | — | Pennsylvania |
| 98 | Robert Barnes | 24 | Son-in-law | Truck Driver | Pennsylvania |
| 99 | Alma Barnes | 22 | Daughter | — | Pennsylvania |
| 100 | Fred Vancoral | 45 | Head | Watchman | Belgium |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)