WM
William Mcclain — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this William Mcclain across the 1920 and 1930 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1903), then head of a 5-person household.
Age 27
b. ~1903
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | McClain |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Laborer |
| Industry | Gas Corp |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Philadelphia 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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Mcclain | Spouse | — | 54 | ~1876 |
| Elizabeth Mcclain | Daughter | — | 17 | ~1913 |
| William Mcclain | Son | — | 27 | ~1903 |
| William Mcclain | Head | — | 59 | ~1871 |
| Howard Mcclain | Son | — | 22 | ~1908 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 17
Philadelphia, Pennsylvania · implied b. ~1903 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McClain |
| Given Name | William H. |
| 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 | Machinist |
| Industry | Machine Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Son, age 27
Philadelphia, Pennsylvania · implied b. ~1903 — 5 household members
| Surname | McClain |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | Gas Corp |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| 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 Mcclain across 2 US Census years (1920 and 1930) in Philadelphia, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
William Mcclain
Son · 1930 · age 27 · b. ~1903 · Pennsylvania
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Sibling
Howard Mcclain
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mcclain
Sibling · 1930 · age 17
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
1930 US Federal Census — Philadelphia, Pennsylvania
Open full size
1930 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2100:0437)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Szymkowski | 14 | Son | — | Pennsylvania |
| 2 | Mary Szymkowski | 11 | Daughter | — | Pennsylvania |
| 3 | Stephen Kuczynski | 36 | Head | Staker | Poland |
| 4 | Lena Kuczynski | 33 | Wife | — | Poland |
| 5 | Sigmund Kuczynski | 12 | Son | — | Pennsylvania |
| 6 | Edward Kuczynski | 11 | Son | — | Pennsylvania |
| 7 | Stanley Kuczynski | 8 | Son | — | Pennsylvania |
| 8 | Stephen Kuczynski | 5 | Son | — | Pennsylvania |
| 9 | Mary Milotich | 30 | Head | — | Austria |
| 10 | John Illich | 30 | Head | Machinist | Austria |
| 11 | Mary Illich | 23 | Wife | — | Austria |
| 12 | John Doris | 32 | Head | Secretary | Pennsylvania |
| 13 | Anna Doris | 32 | Wife | Sheet Metal Worker | Pennsylvania |
| 14 | Marceline Doris | 3 | Daughter | — | Pennsylvania |
| 15 | William J. Mcclain | 59 | Head | Engineer | Pennsylvania |
| 16 | Elizabeth Mcclain | 54 | Wife | — | Pennsylvania |
| 17 | William H. Mcclain THIS PERSON | 27 | Son | Laborer | Pennsylvania |
| 18 | Howard Mcclain | 22 | Son | Bookkeeper | Pennsylvania |
| 19 | Elizabeth Mcclain | 17 | Daughter | — | Pennsylvania |
| 20 | John Grabowski | 35 | Head | Boarder | Poland |
| 21 | Frances Grabowski | 40 | Wife | — | Pennsylvania |
| 22 | Joseph Grabowski | 12 | Son | — | Pennsylvania |
| 23 | Loretta Grabowski | 7 | Daughter | — | Pennsylvania |
| 24 | Joseph Muzina | 48 | Head | Painter | Austria |
| 25 | Mary Muzina | 40 | Wife | Cleaner | Austria |
| 26 | Vincent Stefanski | 37 | Head | Laborer | Poland |
| 27 | Sophie Stefanski | 18 | Daughter | — | Pennsylvania |
| 28 | Robert Stefanski | 16 | Son | — | Pennsylvania |
| 29 | Helen Stefanski | 8 | Daughter | — | Pennsylvania |
| 30 | Lillian Stefanski | 6 | Daughter | — | Pennsylvania |
| 31 | Helen Schwartz | 17 | Boarder | Pleater | Pennsylvania |
| 32 | Alexander Wenclewicz | 42 | Head | Laborer | Poland |
| 33 | Rose Wenclewicz | 42 | Wife | — | Poland |
| 34 | Benjamin Wenclewicz | 19 | Son | — | Pennsylvania |
| 35 | Victoria Wenclewicz | 17 | Daughter | Waitress | Pennsylvania |
| 36 | Frances Wenclewicz | 12 | Daughter | — | Pennsylvania |
| 37 | Stanley Wenclewicz | 10 | Son | — | Pennsylvania |
| 38 | Alex Wenclewicz | 6 | Son | — | Pennsylvania |
| 39 | Helen Wenclewicz | 5 | Daughter | — | Pennsylvania |
| 40 | Isacie Wenclewicz | 2 | Daughter | — | Pennsylvania |
| 41 | Joseph Wenclewicz | 0 | Son | — | Pennsylvania |
| 42 | Walter Golejewski | 35 | Head | Laborer | Poland |
| 43 | Alexandra Golejewski | 35 | Wife | — | Poland |
| 44 | Stanley Golejewski | 13 | Son | — | Pennsylvania |
| 45 | Edward Golejewski | 12 | Son | — | Pennsylvania |
| 46 | Laura Golejewski | 11 | Daughter | — | Pennsylvania |
| 47 | John Tepper | 25 | Head | Helper | Pennsylvania |
| 48 | Helen Tepper | 19 | Wife | Helper | Pennsylvania |
| 49 | Lawrence Tepper | 2 | Son | — | Pennsylvania |
| 50 | John Tepper | 0 | Son | — | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)