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William Nicholson — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this William Nicholson across the 1910 and 1920 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1903), then head of a 6-person household.
Age 17
b. ~1903
Male
Son
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | Nicholson |
| Given Name | William |
| 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 | Helper |
| Industry | Express |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Helper |
| Township / Ward | Pittsburgh City |
| 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.
6 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Frank Nicholson | Son | — | 11 | ~1909 |
| William Nicholson | Head | — | 48 | ~1872 |
| Mary Nicholson | Spouse | — | 37 | ~1883 |
| William Nicholson | Son | — | 17 | ~1903 |
| Joseph Nicholson | Son | — | 15 | ~1905 |
| Helen Nicholson | Daughter | — | 14 | ~1906 |
Census Appearances
1910
Allegheny, Pennsylvania
Son, age 9
Allegheny, Pennsylvania · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | M |
| Age | 9 |
| 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 — 6 household members
| Surname | Nicholson |
| Given Name | William |
| 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 | Helper |
| Industry | Express |
| 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 Nicholson across 2 US Census years (1910 and 1920) in Allegheny, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
William Nicholson
Son · 1920 · age 17 · b. ~1903 · Pennsylvania
★ You are viewing this record
Sibling
Frank Nicholson
Sibling · 1920 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Nicholson
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Nicholson
Sibling · 1920 · age 15
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:1920:14thcensusofpopu1517unit:0037)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ning Tai Yee | 36 | Head | Merchant | China |
| 52 | Shing Tai Yee | 51 | Roomer | Merchant | China |
| 53 | Ah Juan Yee | 35 | Roomer | Merchant | China |
| 54 | Yee Hing Chin | 30 | Roomer | Merchant | China |
| 55 | Ah Hong Yee | 28 | Roomer | Merchant | China |
| 56 | Yow Yee | 25 | Roomer | Merchant | China |
| 57 | Yue Yee | 54 | Head | Merchant | China |
| 58 | Yung Yee | 27 | Room | Merchant | China |
| 59 | Yung Yee | 37 | Room | Merchant | China |
| 60 | Yung Yee Yee | 44 | Room | Merchant | China |
| 61 | Wah Yee | 55 | Room | Merchant | China |
| 62 | Yue Yee | 24 | Room | Merchant | China |
| 63 | Yue Yee | 24 | Room | Merchant | China |
| 64 | Huan Ha Tee Lee | 47 | Roomer | Merchant | California |
| 65 | Sech Wah Yee | 30 | Roomer | Merchant | China |
| 66 | Mark Theodoros | 34 | Roomer | Ironworker | Kentucky |
| 67 | Michael Theodoros | 40 | Roomer | Machinist | Ohio |
| 68 | William Theodoros | 40 | Roomer | Machinist | Ohio |
| 69 | William Van Dyck | 30 | Roomer | Labor | Pennsylvania |
| 70 | Ross Lockhart | 25 | Roomer | Labor | Pennsylvania |
| 71 | James Taylor | 45 | Head | Janitor | Ohio |
| 72 | Addie Taylor | 41 | Wife | None | Ohio |
| 73 | Mary Rooney | 60 | Head | None | Ireland |
| 74 | Edward Dunn | 38 | Nephew | Plumber | Ohio |
| 75 | Ellen Garvey | 58 | Head | None | New York |
| 76 | Jerry Leech | 38 | Roomer | Driver | Ohio |
| 77 | Andy Leech | 38 | Roomer | Labor | Ohio |
| 78 | Charles Mantell | 40 | Roomer | Carpenter | New York |
| 79 | Philip Mantell | 48 | Roomer | Carpenter | New York |
| 80 | Mary Collins | 55 | Head | Proprietor | Ireland |
| 81 | Robert Castello | 50 | Boarder | Labor | Ohio |
| 82 | Emma Castello | 42 | Boarder | None | Ohio |
| 83 | James Mccarthy | 48 | Head | Bookkeeper | Ireland |
| 84 | Mary Mccarthy | 33 | Wife | None | Ireland |
| 85 | William Mccarthy | 6 | Son | None | Ohio |
| 86 | William Nicholson | 48 | Head | Watchman | Pennsylvania |
| 87 | Mary Nicholson | 37 | Wife | None | Pennsylvania |
| 88 | Helen Nicholson | 14 | Daughter | None | Pennsylvania |
| 89 | William Nicholson THIS PERSON | 17 | Son | Helper | Pennsylvania |
| 90 | Joseph Nicholson | 15 | Son | None | Pennsylvania |
| 91 | Frank Nicholson | 11 | Son | None | Pennsylvania |
| 92 | Herman Hubert | 39 | Head | Bartender | Germany |
| 93 | Leona Hubert | 32 | Wife | None | Ohio |
| 94 | Augustus Delboar | 29 | Head | Cook | Italy |
| 95 | Mary Delboar | 26 | Wife | None | Italy |
| 96 | William Delboar | 4 | Son | None | England |
| 97 | Mary Delboar | 2 | Daughter | None | Pennsylvania |
| 98 | James Franklin | 29 | Roomer | None | Alaska |
| 99 | William Halle | 23 | Roomer | Laborer | Pennsylvania |
| 100 | Martin Hecker | 64 | Head | Janitor | Holland |
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)