WK
William Kirk — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this William Kirk across the 1910 and 1920 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1909), then head of a 9-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 | William |
| 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 | Mckeesport 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.
9 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Kirk | Son | — | 3 | ~1917 |
| John Kirk | Son | — | 8 | ~1912 |
| Katherine Kirk | Daughter | — | 14 | ~1906 |
| George Kirk | Head | — | 38 | ~1882 |
| Mary Kirk | Spouse | — | 38 | ~1882 |
| George Kirk | Son | — | 16 | ~1904 |
| William Kirk | Son | — | 11 | ~1909 |
| Robert Kirk | Son | — | 5 | ~1915 |
| Lizzie Kirk | Daughter | — | 18 | ~1902 |
Census Appearances
1910
Allegheny, Pennsylvania
Son, age 1
Allegheny, Pennsylvania · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirk |
| Given Name | William L. |
| 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 — 9 household members
| Surname | Kirk |
| Given Name | William |
| 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 William Kirk across 2 US Census years (1910 and 1920) in Allegheny, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
William Kirk
Son · 1920 · age 11 · b. ~1909 · Pennsylvania
★ You are viewing this record
Sibling
Katherine Kirk
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Kirk
Sibling · 1920 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Kirk
Sibling · 1920 · age 3
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
Sibling
Lizzie Kirk
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Kirk
Sibling · 1920 · age 16
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:1920:14thcensusofpopu1587unit:0202)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ethel | 23 | Daughter | — | Pennsylvania |
| 52 | George Spayd | 47 | Head | Salesman | Pennsylvania |
| 53 | Annie Spayd | 42 | Wife | — | Ireland |
| 54 | Annie Spayd | 17 | Daughter | Operator | Ireland |
| 55 | Alice Spayd | 16 | Daughter | Operator | Ireland |
| 56 | Mary Spayd | 7 | Daughter | — | Pennsylvania |
| 57 | Catherine Spayd | 4 | Daughter | — | Pennsylvania |
| 58 | Amanda Koch | 41 | Head | Operator | Pennsylvania |
| 59 | Robert Koch | 19 | Son | Laborer | Pennsylvania |
| 60 | Anna Koch | 19 | Daughter | Operator | Pennsylvania |
| 61 | Helen Koch | 14 | Daughter | Operator | Pennsylvania |
| 62 | George Koch | 11 | Son | — | Pennsylvania |
| 63 | Ruth Koch | 7 | Daughter | — | Pennsylvania |
| 64 | Lillian Koch | 6 | Daughter | — | Pennsylvania |
| 65 | Joseph Lang | 40 | Head | Laborer | Hungary |
| 66 | Mary Lang | 40 | Wife | — | Hungary |
| 67 | Mary Lang | 14 | Daughter | — | Hungary |
| 68 | Elizabeth Lang | 12 | Daughter | — | Hungary |
| 69 | John Heilig | 32 | Head | Laborer | Pennsylvania |
| 70 | Mary Heilig | 31 | Wife | — | Pennsylvania |
| 71 | Teresa Heilig | 5 | Daughter | — | Pennsylvania |
| 72 | John Heilig | 4 | Son | — | Pennsylvania |
| 73 | Joseph Heilig | 2 | Son | — | Pennsylvania |
| 74 | Adeline Heilig | 0 | Daughter | — | Pennsylvania |
| 75 | Mary Heilig | 57 | Mother | — | Pennsylvania |
| 76 | John Lauer | 62 | Head | — | Pennsylvania |
| 77 | Mary Lauer | 57 | Wife | — | Pennsylvania |
| 78 | John Lauer | 26 | Son | Laborer | Pennsylvania |
| 79 | Charles Lauer | 22 | Son | Laborer | Pennsylvania |
| 80 | Mary Lauer | 20 | Daughter | — | Pennsylvania |
| 81 | Anna Lauer | 17 | Daughter | — | Pennsylvania |
| 82 | Catherine Lauer | 15 | Daughter | — | Pennsylvania |
| 83 | William Pettigrew | 21 | Head | Laborer | Pennsylvania |
| 84 | Mary Pettigrew | 22 | Wife | — | Pennsylvania |
| 85 | William Pettigrew | 0 | Son | — | Pennsylvania |
| 86 | Edward Pettigrew | 18 | Brother | — | Pennsylvania |
| 87 | George Kirk | 38 | Head | Machinist | Pennsylvania |
| 88 | Mary Kirk | 38 | Wife | — | Pennsylvania |
| 89 | Lizzie Kirk | 18 | Daughter | Machinist | Pennsylvania |
| 90 | George Kirk | 16 | Son | — | Pennsylvania |
| 91 | Katherine Kirk | 14 | Daughter | — | Pennsylvania |
| 92 | William Kirk THIS PERSON | 11 | Son | — | Pennsylvania |
| 93 | John Kirk | 8 | Son | — | Pennsylvania |
| 94 | Robert Kirk | 5 | Son | — | Pennsylvania |
| 95 | William Kirk | 3 | Son | — | Pennsylvania |
| 96 | Joseph Sandor | 52 | Head | Ironworker | Hungary |
| 97 | Rosie Sandor | 54 | Wife | — | Hungary |
| 98 | Violet Sandor | 34 | Boarder | — | Pennsylvania |
| 99 | George Dury | 64 | Head | Laborer | Pennsylvania |
| 100 | Emma Dury | 53 | Wife | Housekeeper | 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)