WM
William Mccormick — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this William Mccormick across the 1910 and 1920 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1899), then head of a 9-person household.
Age 21
b. ~1899
Male
Son
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | McCormick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Salesman |
| Industry | Drug |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Salesman |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1899 |
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 |
|---|---|---|---|---|
| Hannah Mccormick | Daughter | — | 25 | ~1895 |
| Janet Mccormick | Daughter | — | 17 | ~1903 |
| Catherine Mccormick | Spouse | — | 50 | ~1870 |
| Rose Mccormick | Daughter | — | 15 | ~1905 |
| Alice Mccormick | Daughter | — | 13 | ~1907 |
| Ruth Mccormick | Daughter | — | 19 | ~1901 |
| Isabelle Mccormick | Daughter | — | 23 | ~1897 |
| William Mccormick | Son | — | 21 | ~1899 |
| William Mccormick | Head | — | 55 | ~1865 |
Census Appearances
1910
Allegheny, Pennsylvania
Son, age 10
Allegheny, Pennsylvania · implied b. ~1900 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| 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 21
Allegheny, Pennsylvania · implied b. ~1899 — 9 household members
| Surname | McCormick |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Salesman |
| Industry | Drug |
| Class of Worker | 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 William Mccormick across 2 US Census years (1910 and 1920) in Allegheny, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
William Mccormick
Son · 1920 · age 21 · b. ~1899 · Pennsylvania
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Sibling
Rose Mccormick
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Janet Mccormick
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hannah Mccormick
Sibling · 1920 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Mccormick
Sibling · 1920 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Isabelle Mccormick
Sibling · 1920 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Mccormick
Sibling · 1920 · age 13
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
43 people indexed on this census page (ia:1920:14thcensusofpopu1647unit:0031)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 8 | John Wood | 25 | Head | Salesman | Pennsylvania |
| 9 | Mary Wood | 21 | Wife | — | Pennsylvania |
| 10 | William Wood | 2 | Son | — | Pennsylvania |
| 11 | Gertrude Wood | 0 | Daughter | — | Pennsylvania |
| 12 | August Vassallo | 42 | Head | Merchant | Italy |
| 13 | Philomena Vassallo | 36 | Wife | — | Italy |
| 14 | Nancy Vassallo | 16 | Daughter | — | Pennsylvania |
| 15 | Rose Vassallo | 14 | Daughter | — | Pennsylvania |
| 16 | Philomena Vassallo | 12 | Daughter | — | Pennsylvania |
| 17 | John Vassallo | 10 | Son | — | Pennsylvania |
| 18 | Frank Vassallo | 6 | Son | — | Pennsylvania |
| 19 | Margaret Vassallo | 4 | Daughter | — | Pennsylvania |
| 20 | Arthur Vassallo | 1 | Son | — | Pennsylvania |
| 21 | William Mccormick | 55 | Head | — | Pennsylvania |
| 22 | Catherine Mccormick | 50 | Wife | — | Pennsylvania |
| 23 | Hannah Mccormick | 25 | Daughter | — | Pennsylvania |
| 24 | Isabelle Mccormick | 23 | Daughter | — | Pennsylvania |
| 25 | William Mccormick THIS PERSON | 21 | Son | Salesman | Pennsylvania |
| 26 | Ruth Mccormick | 19 | Daughter | Stenographer | Pennsylvania |
| 27 | Janet Mccormick | 17 | Daughter | Student | Pennsylvania |
| 28 | Rose Mccormick | 15 | Daughter | Student | Pennsylvania |
| 29 | Alice Mccormick | 13 | Daughter | — | Pennsylvania |
| 30 | Frederick Dunlap | 27 | Head | Salesman | Pennsylvania |
| 31 | Alice Dunlap | 22 | Wife | — | England |
| 32 | Alice Dunlap | 1 | Daughter | — | Pennsylvania |
| 33 | Alfred Dunlap | 0 | Son | — | Pennsylvania |
| 34 | Harry Sperry | 29 | Head | Accountant | New Jersey |
| 35 | Alice Sperry | 26 | Wife | — | Pennsylvania |
| 36 | William Sperry | 4 | Son | — | New Jersey |
| 37 | Joan Sperry | 1 | Daughter | — | Pennsylvania |
| 38 | John Sperry | 26 | Brother | Stenographer | Pennsylvania |
| 39 | William Patrick | 50 | Head | Clerk | Pennsylvania |
| 40 | Ellen Patrick | 48 | Wife | — | Pennsylvania |
| 41 | Edward Shields | 35 | Head | Salesman | New Jersey |
| 42 | Elizabeth Shields | 34 | Wife | — | Maryland |
| 43 | Richard Enoch | 58 | Head | Salesman | Pennsylvania |
| 44 | Sarah Enoch | 59 | Wife | — | Pennsylvania |
| 45 | Edith Enoch | 32 | Daughter | Salesman | Pennsylvania |
| 46 | Elizabeth Enoch | 26 | Daughter | Saleswoman | Pennsylvania |
| 47 | Frank Nohl | 36 | Head | Salesman | Pennsylvania |
| 48 | May Nohl | 33 | Wife | — | Pennsylvania |
| 49 | James Nohl | 7 | Son | School | Pennsylvania |
| 50 | Audrey Nohl | 2 | Daughter | — | Pennsylvania |
Related Census Records
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)