WC
William Collier — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Collier across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Collier |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Ross |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Ross |
| Est. Birth Year | ~1929 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Flora Collier | Daughter | — | 23 | ~1917 |
| William Collier | Head | — | 51 | ~1889 |
| Marion Collier | Daughter | — | 16 | ~1924 |
| William Collier | Son | — | 11 | ~1929 |
| Violet Collier | Daughter | — | 17 | ~1923 |
| Viola Collier | Spouse | — | 47 | ~1893 |
| Harry Collier | Son | — | 23 | ~1917 |
| Dorothy Collier | Daughter | — | 9 | ~1931 |
| Janet Collier | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 1
Allegheny, Pennsylvania · implied b. ~1929 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Collier |
| Given Name | William |
| 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 |
1940
Allegheny-County, Pennsylvania
Son, age 11
Allegheny-County, Pennsylvania · implied b. ~1929 — 9 household members
| Surname | Collier |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Ross |
| 1935 Residence (County) | Allegheny |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| 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 Collier across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Collier
Son · 1940 · age 11 · b. ~1929 · Pennsylvania
★ You are viewing this record
Sibling
Janet Collier
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Flora Collier
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Collier
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Violet Collier
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Collier
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Collier
Sibling · 1940 · age 23
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
1940 US Federal Census — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03416-00340)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jeanette Klingensmith | 23 | wife | Salesgirl | Illinois |
| 42 | Clarence Sherriff | 36 | Head | Chauffeur | Pennsylvania |
| 43 | Freda Sherriff | 37 | wife | — | Pennsylvania |
| 44 | Wayne Sherriff | 9 | son | — | Pennsylvania |
| 45 | Henrietta Rossbach | 66 | mother | — | Pennsylvania |
| 46 | Oscar Phillip Rohm | 54 | Head | Electrician | Pennsylvania |
| 47 | Florence Rohm | 50 | wife | — | Pennsylvania |
| 48 | Anna Barbara Rohm | 25 | daughter | Stenographer | Pennsylvania |
| 49 | John George Rohm | 21 | son | Maintenance Man Apprentice | Pennsylvania |
| 50 | Leo Paul Rohm | 19 | son | App. Electrician | Pennsylvania |
| 51 | Mary Catherine Rohm | 15 | daughter | New Worker | Pennsylvania |
| 52 | Harriet Lucille Rohm | 16 | daughter | — | Pennsylvania |
| 53 | William Joseph Rohm | 14 | son | — | Pennsylvania |
| 54 | Edward Jacob Rohm | 12 | son | — | Pennsylvania |
| 55 | Lois Patricia Rohm | 9 | daughter | — | Pennsylvania |
| 56 | Agnes Helen Rohm | 7 | daughter | — | Pennsylvania |
| 57 | B. J. Fitzpatrick | 42 | Head | Cement Contractor | Pennsylvania |
| 58 | Mildred Fitzpatrick | 30 | wife | — | Pennsylvania |
| 59 | Mildred Fitzpatrick | 17 | daughter | New Worker | Pennsylvania |
| 60 | Robert Fitzpatrick | 16 | son | — | Pennsylvania |
| 61 | Jean Fitzpatrick | 12 | daughter | — | Pennsylvania |
| 62 | Roy Fitzpatrick | 10 | son | — | Pennsylvania |
| 63 | Shirley Ann Fitzpatrick | 8 | daughter | — | Pennsylvania |
| 64 | Warren Fitzpatrick | 3 | son | — | Pennsylvania |
| 65 | William Collier | 51 | Head | Foreman Shop | Pennsylvania |
| 66 | Viola Collier | 47 | wife | — | Pennsylvania |
| 67 | Flora Collier | 23 | daughter | Stenographer | Pennsylvania |
| 68 | Harry Collier | 23 | son | Laborer | Pennsylvania |
| 69 | Violet Collier | 17 | daughter | — | Pennsylvania |
| 70 | Marion Collier | 16 | daughter | — | Pennsylvania |
| 71 | William Collier THIS PERSON | 11 | son | — | Pennsylvania |
| 72 | Dorothy Collier | 9 | daughter | — | Pennsylvania |
| 73 | Janet Collier | 5 | daughter | — | Pennsylvania |
| 74 | Merle Lourie | 39 | Head | Laborer | Pennsylvania |
| 75 | Alma Lourie | 31 | wife | — | New York |
| 76 | Merle Jr. Lourie | 12 | son | — | Pennsylvania |
| 77 | Edwin Lourie | 10 | son | — | Pennsylvania |
| 78 | Donna Lourie | 1 | daughter | — | Pennsylvania |
| 79 | Andrew Johnson | 59 | father-in-law | Body Repairman | Sweden |
| 80 | Fred W. Blake | 67 | Head | Rougher | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)