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John Mccormick — 1930 US Census Record
Model Tree available1930 United States Federal Census · Erie, Pennsylvania
Our Model Tree links this John Mccormick across the 1910, 1920 and 1930 US Censuses in Erie, Pennsylvania (XGBoost, ~Confirmed), with identified parents Michael & Mary — first a son (b.~1903), then head of a 6-person household.
Age 27
b. ~1903
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Erie, Pennsylvania |
| Surname | McCormick |
| Given Name | John M. |
| 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 | Superintendent |
| Industry | Paving |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Superintendent |
| Township / Ward | Erie 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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Laura Mccormick | Daughter | — | 29 | ~1901 |
| Sarah Mccormick | Daughter | — | 30 | ~1900 |
| Mary Mccormick | Daughter | — | 32 | ~1898 |
| Michael Mccormick | Head | — | 64 | ~1866 |
| Mary Mccormick | Other | — | 61 | ~1869 |
| John Mccormick | Son | — | 27 | ~1903 |
Census Appearances
Son, age 9
Erie, Pennsylvania · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormack |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Erie, Pennsylvania
Son, age 19
Erie, Pennsylvania · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| 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
Erie, Pennsylvania
Son, age 27
Erie, Pennsylvania · implied b. ~1903 — 6 household members
| Surname | McCormick |
| Given Name | John M. |
| 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 | Superintendent |
| Industry | Paving |
| Class of Worker | W |
| 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 John Mccormick across 3 US Census years (1910, 1920 and 1930) in Erie, Pennsylvania, using XGBoost record linkage. Identified parents: father Michael Mccormick (~0.92 confidence) and mother Mary Mccormick (~0.92 confidence) and mother Mary Mccormack (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Mccormick
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Mary Mccormick
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Mary Mccormack
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mccormick
Son · 1930 · age 27 · b. ~1903 · Pennsylvania
★ You are viewing this record
Sibling
Laura Mccormick
Sibling · 1930 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Mccormick
Sibling · 1930 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mccormick
Sibling · 1930 · age 32
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 — Erie, Pennsylvania
Open full size
1930 US Federal Census — Erie, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2037:0266)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George A. Willis | 54 | Head | Secretary | Pennsylvania |
| 2 | Mabel A. Willis | 52 | Wife-H | None | Pennsylvania |
| 3 | Richard H. Willis | 21 | Son | None | Pennsylvania |
| 4 | Samuel E. Sweet | 41 | Head | Draughtsman | Pennsylvania |
| 5 | Anne C. Sweet | 40 | Wife-H | None | Pennsylvania |
| 6 | Thomas Sweet | 10 | Son | None | Pennsylvania |
| 7 | Arthur Sweet | 4 | Son | None | Pennsylvania |
| 8 | Margaret Sweet | 1 | Daughter | None | Pennsylvania |
| 9 | Hedlund Margaret Sweet | 69 | Mother-in-law | None | Irish Free State |
| 10 | Robert J. Gensheimer | 45 | Head | Contractor | Pennsylvania |
| 11 | Nell M. Gensheimer | 45 | Wife-H | None | Pennsylvania |
| 12 | Robert J. Jr. Gensheimer | 7 | Son | None | Pennsylvania |
| 13 | Howard R. Dean | 34 | Head | Teacher | Pennsylvania |
| 14 | Miriam Dean | 34 | Wife-H | None | Ohio |
| 15 | Martha Dean | 6 | Daughter | None | Ohio |
| 16 | Margaret Dean | 4 | Daughter | None | Pennsylvania |
| 17 | Lora J. Dean | 2 | Daughter | None | Pennsylvania |
| 18 | Ruth E. Dean | 0 | Daughter | None | Pennsylvania |
| 19 | Harry A. Holmes | 41 | Head | Secretary | Pennsylvania |
| 20 | Gladys K. Holmes | 38 | Wife-H | None | Ohio |
| 21 | Allan J. Holmes | 15 | Stepson | None | Ohio |
| 22 | Charles W. Reeder | 75 | Head | None | Ohio |
| 23 | Publing Marion Reeder | 49 | Daughter | Housekeeper | Pennsylvania |
| 24 | David W. Jardine | 44 | Head | Manager | Canada-English |
| 25 | Winifred Jardine | 38 | Wife-H | None | Kansas |
| 26 | John Jardine | 16 | Son | None | Vermont |
| 27 | Winifred Jardine | 11 | Daughter | None | Vermont |
| 28 | Michael Mccormick | 64 | Head | Contractor | Pennsylvania |
| 29 | Mary Mccormick | 61 | Wife-H | None | Pennsylvania |
| 30 | Mary E. Mccormick | 32 | Daughter | None | Pennsylvania |
| 31 | Sarah Mccormick | 30 | Daughter | Teacher | Pennsylvania |
| 32 | Laura Mccormick | 29 | Daughter | Teacher | Pennsylvania |
| 33 | John M. Mccormick THIS PERSON | 27 | Son | Superintendent | Pennsylvania |
| 34 | John W. Craig | 28 | Head | Secretary | Pennsylvania |
| 35 | Marion Craig | 23 | Wife-H | None | Pennsylvania |
| 36 | John W. Jr. Craig | 3 | Son | None | Pennsylvania |
| 37 | Robert W. Craig | 1 | Son | None | Pennsylvania |
| 38 | Elsie Bayer | 25 | Maid | Maid | Pennsylvania |
| 39 | Frank J. Schmid | 55 | Head | Manager | Pennsylvania |
| 40 | Edna G. Schmid | 54 | Wife-H | None | Pennsylvania |
| 41 | John Schmid | 16 | Son | None | Pennsylvania |
| 42 | Roy B. Way | 35 | Head | Realtor | Pennsylvania |
| 43 | Grace Way | 36 | Wife-H | None | Ohio |
| 44 | Virginia Way | 6 | Daughter | None | Pennsylvania |
| 45 | Dorothy Way | 0 | Daughter | None | Pennsylvania |
| 46 | William Kilgore | 49 | Head | Superintendent | Tennessee |
| 47 | Mary Kilgore | 43 | Wife-H | None | Colorado |
| 48 | Dorothy Kilgore | 20 | Daughter | None | Pennsylvania |
| 49 | Mary W. Kilgore | 15 | Daughter | None | Pennsylvania |
| 50 | William C. Troundler | 38 | Head | Superintendent | Ohio |
Related Census Records
Pedigree Summary
John + 3 siblings
Gen 1 · 3 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)