WM
William Mccormick — 1930 US Census Record
Model Tree available1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this William Mccormick across the 1910, 1920 and 1930 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1909), then head of a 8-person household.
Age 21
b. ~1909
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | McCormick |
| Given Name | William J. |
| 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 | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia 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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Mccormick | Head | — | 64 | ~1866 |
| Catherine Mccormick | Daughter | — | 15 | ~1915 |
| Lilly Bruce | Other | — | 51 | ~1879 |
| Anna Mccormick | Daughter | — | 12 | ~1918 |
| Joseph Farrell | Other | — | 50 | ~1880 |
| John Mccormick | Son | — | 18 | ~1912 |
| Catherine Mccormick | Other | — | 62 | ~1868 |
| William Mccormick | Son | — | 21 | ~1909 |
Census Appearances
1910
Philadelphia, Pennsylvania
Son, age
Philadelphia, Pennsylvania · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormack |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Son, age 10
Philadelphia, Pennsylvania · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | William J |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Son, age 21
Philadelphia, Pennsylvania · implied b. ~1909 — 8 household members
| Surname | McCormick |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | 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 3 US Census years (1910, 1920 and 1930) in Philadelphia, Pennsylvania, using XGBoost record linkage. Identified parents: father William Mccormick (~0.92 confidence) and father William Mccormack (~0.92 confidence) and mother Amelia Mccormack (~0.92 confidence) and father Albert Mccormick (~0.92 confidence) and mother Sarah Mccormick (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Mccormick
b. ~1866
Source father
● Household
· direct · ~0.92
Father
William Mccormack
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Amelia Mccormack
b. ~1887
Source mother
● Household
· direct · ~0.92
Father
Albert Mccormick
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Sarah Mccormick
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mccormick
Son · 1930 · age 21 · b. ~1909 · Pennsylvania
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Sibling
John Mccormick
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Mccormick
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mccormick
Sibling · 1930 · 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
1930 US Federal Census — Philadelphia, Pennsylvania
Open full size
1930 US Federal Census — Philadelphia, Pennsylvania
Page Contents
49 people indexed on this census page (ia:1930:fifteenthcensus00reel2112:0733)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen F. Beacroft | 6 | Daughter | — | Pennsylvania |
| 2 | Fred F. Beacroft | 32 | Brother-in-law | — | Pennsylvania |
| 3 | William P. Mccullay | 52 | Head | Chauffeur | Pennsylvania |
| 4 | William J. Mccullay | 28 | Son | Finisher | Pennsylvania |
| 5 | Emma Ober | 45 | Housekeeper | Manager | France |
| 6 | John H. Nealis | 63 | Head | Housekeeper | Pennsylvania |
| 7 | Thomas A. Nealis | 38 | Daughter | Paper Cutter | Pennsylvania |
| 8 | Moses Nolan | 63 | Head | Book Binder | Northern Ireland |
| 9 | Anna Nolan | 63 | Wife-H | — | Northern Ireland |
| 10 | Carrie Rodebaugh | 46 | Head-HR | Clinical Work | Pennsylvania |
| 11 | Elmer C. Rodebaugh | 26 | Son | Matron | Pennsylvania |
| 12 | Anna D. Rodebaugh | 11 | Daughter | Weaver | Pennsylvania |
| 13 | Charlie M. Mundy | 24 | Head | — | England |
| 14 | Violet C. Mundy | 22 | Wife-H | Buffer | Pennsylvania |
| 15 | John Wolf | 27 | Head | Top Lady | Pennsylvania |
| 16 | Marie V. Wolf | 29 | Wife-H | Chauffeur | Pennsylvania |
| 17 | William F. Mccormick | 64 | Head | — | Pennsylvania |
| 18 | Catherine B. Mccormick | 62 | Wife-H | — | Pennsylvania |
| 19 | William J. Mccormick THIS PERSON | 21 | Son | — | Pennsylvania |
| 20 | John J. Mccormick | 18 | Son | Feeder | Pennsylvania |
| 21 | Catherine R. Mccormick | 15 | Daughter | — | Pennsylvania |
| 22 | Anna M. Mccormick | 12 | Daughter | — | Pennsylvania |
| 23 | Lilly M. Bruce | 51 | Wife-HR | — | Pennsylvania |
| 24 | Joseph M. Farrell | 50 | Boarder | Housekeeper | Pennsylvania |
| 25 | Edward W. Mckinley | 56 | Head | Guard | Pennsylvania |
| 26 | Emma M. Mckinley | 52 | Wife-H | Watchman | Pennsylvania |
| 27 | Margaret L. Martin | 54 | Boarder | — | Pennsylvania |
| 28 | Charles S. Bittner | 46 | Head | Saleswoman | Pennsylvania |
| 29 | Lena L. Bittner | 44 | Wife-H | Tool Room Keeper | Pennsylvania |
| 30 | Mary C. Sintzelen | 60 | Head-H | — | Pennsylvania |
| 31 | Ella E. Sintzelen | 56 | Sister | — | Pennsylvania |
| 32 | Carrie F. Sintzelen | 49 | Sister | Trimmer | Pennsylvania |
| 33 | Rudolph Lorentz | 60 | Head | Investigator | Germany |
| 34 | Augusta N. Lorentz | 54 | Wife-H | Waiter | Pennsylvania |
| 35 | Matilda Haussler | 76 | Mother-in-law | — | Germany |
| 36 | Louis Lorentz | 57 | Brother | — | Germany |
| 37 | Robert M. Lumpkin | 57 | Boarder | Packer | Pennsylvania |
| 38 | Anna P. Jameson | 49 | Head-H | Printer | Pennsylvania |
| 39 | Helen Jameson | 22 | Daughter | — | Pennsylvania |
| 40 | James M. Caldwell | 33 | Boarder | Forelady | Pennsylvania |
| 41 | Harry Wynnes | 54 | Head | Carpenter | England |
| 42 | Florence Wynnes | 54 | Wife-H | — | Pennsylvania |
| 43 | Mary Wynkoop | 43 | Head-H | Cleaner | Northern Ireland |
| 44 | Mabel V. Wynkoop | 12 | Daughter | — | Pennsylvania |
| 45 | James B. Wynkoop | 13 | Son | — | Pennsylvania |
| 46 | Ellen Mcdonough | 23 | Boarder | Canceller | United Free State |
| 47 | Joseph B. Higgins | 64 | Head | Plumber | Northern Ireland |
| 48 | Sarah J. Higgins | 64 | Wife-H | — | Northern Ireland |
| 49 | Albert J. Higgins | 28 | Son | Wood Finisher | Pennsylvania |
Pedigree Summary
William + 3 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)