JK
James Kirk — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this James Kirk across the 1910 and 1920 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1909), then head of a 7-person household.
Age 11
b. ~1909
Male
Son
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | Kirk |
| Given Name | James R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1909 |
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 |
|---|---|---|---|---|
| John Kirk | Son | — | 8 | ~1912 |
| William Kirk | Head | — | 36 | ~1884 |
| Nellie Cunningham | Other | — | 30 | ~1890 |
| Albert Kirk | Son | — | 2 | ~1918 |
| Mary Kirk | Spouse | — | 33 | ~1887 |
| James Kirk | Son | — | 11 | ~1909 |
| William Kirk | Son | — | 5 | ~1915 |
Census Appearances
1910
Allegheny, Pennsylvania
Son, age 1
Allegheny, Pennsylvania · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirk |
| Given Name | James R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| 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 11
Allegheny, Pennsylvania · implied b. ~1909 — 7 household members
| Surname | Kirk |
| Given Name | James R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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 |
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 Kirk across 2 US Census years (1910 and 1920) in Allegheny, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
James Kirk
Son · 1920 · age 11 · b. ~1909 · Pennsylvania
★ You are viewing this record
Sibling
William Kirk
Sibling · 1920 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Kirk
Sibling · 1920 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kirk
Sibling · 1920 · age 8
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:1920:14thcensusofpopu1519unit:0735)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frederick Saunders | 46 | Head | Draftsman | England |
| 2 | May Saunders | 31 | Wife | — | Pennsylvania |
| 3 | Ida M. Saunders | 22 | Daughter | — | Pennsylvania |
| 4 | Martha S. Saunders | 20 | Daughter | — | Pennsylvania |
| 5 | Alice A. Anderson | 15 | Lodger | — | Pennsylvania |
| 6 | Michael Halloran | 23 | Head | Motorman | Ireland |
| 7 | Delia Halloran | 23 | Wife | — | Ireland |
| 8 | Stephen O'Toole | 35 | Head | Motorman | Ireland |
| 9 | Margaret O'Toole | 30 | Wife | — | Ireland |
| 10 | Mary O'Toole | 6 | Daughter | — | Pennsylvania |
| 11 | Margaret O'Toole | 3 | Daughter | — | Pennsylvania |
| 12 | James O'Toole | 0 | Son | — | Pennsylvania |
| 13 | Ernest W. Hagerty | 64 | Head | Bricklayer | Germany |
| 14 | Albertina H. Hagerty | 64 | Wife | — | Germany |
| 15 | George Hagerty | 28 | Son | Bricklayer | Pennsylvania |
| 16 | Henry W. Neitz | 31 | Head | Butcher | Germany |
| 17 | Margaret C. Neitz | 30 | Wife | — | Pennsylvania |
| 18 | Helen M. Neitz | 5 | Daughter | — | Pennsylvania |
| 19 | Henry C. Neitz | 3 | Son | — | Pennsylvania |
| 20 | John V. Neitz | 1 | Son | — | Pennsylvania |
| 21 | Virginia A. Neitz | 0 | Daughter | — | Pennsylvania |
| 22 | Frederick D. Green | 22 | Head | Com. Salesman | Ohio |
| 23 | Helen L. Green | 20 | Wife | — | Ohio |
| 24 | C. Howard Jones | 33 | Head | Engineer | Pennsylvania |
| 25 | Anna B. Jones | 33 | Wife | — | Pennsylvania |
| 26 | W. Maxwell Jones | 3 | Son | — | Pennsylvania |
| 27 | William J. Kirk | 36 | Head | Laborer | Pennsylvania |
| 28 | Mary E. Kirk | 33 | Wife | — | Pennsylvania |
| 29 | James R. Kirk THIS PERSON | 11 | Son | — | Pennsylvania |
| 30 | John A. Kirk | 8 | Son | — | Pennsylvania |
| 31 | William Kirk | 5 | Son | — | Pennsylvania |
| 32 | Albert Kirk | 2 | Son | — | Pennsylvania |
| 33 | Nellie I. Cunningham | 30 | Sister-in-law | — | Pennsylvania |
| 34 | Harry S. Mazzeo | 37 | Head | Painter | Pennsylvania |
| 35 | Gertrude E. Mazzeo | 38 | Wife | — | Pennsylvania |
| 36 | John F. Mazzeo | 9 | Son | — | Pennsylvania |
| 37 | Thomas H. Mazzeo | 8 | Son | — | Pennsylvania |
| 38 | Virginia M. Mazzeo | 6 | Daughter | — | Pennsylvania |
| 39 | Charles R. Mazzeo | 2 | Son | — | Pennsylvania |
| 40 | Marjorie H. Mazzeo | 1 | Daughter | — | Pennsylvania |
| 41 | John H. Martin | 54 | Head | Stockman | Pennsylvania |
| 42 | Louisa B. Martin | 52 | Wife | — | Pennsylvania |
| 43 | John H. Martin | 24 | Son | Salesman | Pennsylvania |
| 44 | Harry H. Martin | 23 | Son | Salesman | Pennsylvania |
| 45 | William F. Martin | 11 | Son | — | Pennsylvania |
| 46 | Charles S. Martin | 49 | Brother | Paving | Pennsylvania |
| 47 | Peter J. Diffley | 47 | Head | Laborer | Ireland |
| 48 | Susan M. Diffley | 37 | Wife | — | Ireland |
| 49 | Margaret A. Diffley | 18 | Daughter | — | Pennsylvania |
| 50 | Katherine R. Diffley | 15 | Daughter | — | Pennsylvania |
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)