JB
John Blair — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Essex, New Jersey
Our Model Tree links this John Blair across the 1900, 1910, 1920 and 1930 US Censuses in Essex, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 5-person household.
Age 55
b. ~1875
Male
Head
Born: Scotland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Essex, New Jersey |
| Surname | Blair |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 25 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Shipping Clerk |
| Industry | Thread Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Radio Set | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Shipping Clerk |
| Township / Ward | Irvington Town |
| Est. Birth Year | ~1875 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Blair | Daughter | — | 23 | ~1907 |
| Dorothy Blair | Daughter | — | 19 | ~1911 |
| John Blair | Head | — | 55 | ~1875 |
| Mary Park | Other | — | 71 | ~1859 |
| Lelia Blair | Other | — | 48 | ~1882 |
Census Appearances
1900
Essex, New …
Other, age 24
Essex, New Jersey · implied b. ~1876 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | John G. |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Scotland |
| Birth Month | Oct |
| Birth Year | 1876 |
| Year of Immigration | 1880 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Shipping clerk |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1910
Essex, New …
Head, age 33
Essex, New Jersey · implied b. ~1877 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | John C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Scotland |
| Years Married | 7 |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Clerk |
| Industry | Thread Works |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1920
Essex, New …
Head, age 42
Essex, New Jersey · implied b. ~1878 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | John C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Clerk |
| Industry | Thread |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Scotland |
| Year of Naturalization | 1885 |
| Birthplace (normalized) | scotland |
1930
Essex, New …
Head, age 55
Essex, New Jersey · implied b. ~1875 — 5 household members
| Surname | Blair |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1880 |
| Age at First Marriage | 25 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Shipping Clerk |
| Industry | Thread Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Radio Set | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Blair across 4 US Census years (1900, 1910, 1920 and 1930) in Essex, New Jersey, using XGBoost record linkage.
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This person
Anchor record
John Blair
Head · 1930 · age 55 · b. ~1875 · New Jersey
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Essex, New Jersey
Open full size
1930 US Federal Census — Essex, New Jersey
Page Contents
50 people indexed on this census page (ia:1930:newjerseycensus00reel1330:1063)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Louis Wilcken | 43 | Head | Baker | Germany |
| 52 | Carrie Wilcken | 41 | Wife-H | None | Germany |
| 53 | Margaret Wilcken | 20 | Daughter | Sales Lady | New Jersey |
| 54 | Carrie Wilcken | 18 | Daughter | Sales Lady | New Jersey |
| 55 | Louis Wilcken | 11 | Son | None | New Jersey |
| 56 | Isaac James | 50 | Head | Iron Worker | Canada English |
| 57 | Helen James | 33 | Wife-H | None | New Jersey |
| 58 | Edward Meyer | 52 | Head | Foreman | New Jersey |
| 59 | Meta Meyer | 50 | Wife-H | None | New Jersey |
| 60 | Eleanor Meyer | 16 | Daughter | None | New Jersey |
| 61 | Bertha Sievering | 76 | Mother-in-law | None | Germany |
| 62 | John G. Blair THIS PERSON | 55 | Head | Shipping Clerk | Scotland |
| 63 | Lelia Blair | 48 | Wife-H | None | New Jersey |
| 64 | Evelyn Blair | 23 | Daughter | Stenographer | New Jersey |
| 65 | Dorothy Blair | 19 | Daughter | None | New Jersey |
| 66 | Mary G. Park | 71 | Mother-in-law | None | England |
| 67 | Howard Oliver | 44 | Head | Carpenter | Ohio |
| 68 | Lena Oliver | 45 | Wife | None | New York |
| 69 | John Scott | 16 | Step-son | None | New York |
| 70 | William Scott | 17 | Step-son | None | New York |
| 71 | Fred G. Davy | 25 | Head | Teamster | New Jersey |
| 72 | Muriel Davy | 23 | Wife-H | None | New Jersey |
| 73 | Muriel Davy | 0 | Daughter | None | New Jersey |
| 74 | Fred G. Davy | 2 | Son | None | New Jersey |
| 75 | Charles E. Thiery | 54 | Head | Jeweler | New Jersey |
| 76 | Emma M. Thiery | 51 | Wife-H | None | New Jersey |
| 77 | E. Fred Thiery | 29 | Son | Splicer | New Jersey |
| 78 | Lester F. Thiery | 23 | Son | Installer | New Jersey |
| 79 | Robert E. Thiery | 20 | Son | Installer | New Jersey |
| 80 | Howard W. Thiery | 15 | Son | None | New Jersey |
| 81 | Gustav Hurtman | 53 | Head | Court Attendant | New Jersey |
| 82 | Bertha Hurtman | 49 | Wife | None | New Jersey |
| 83 | Marie Hurtman | 19 | Daughter | Stenographer | New Jersey |
| 84 | Bertha Hurtman | 17 | Daughter | None | New Jersey |
| 85 | Johanna Hurtman | 12 | Daughter | None | New Jersey |
| 86 | Emma Ruth | 60 | Sister-law | None | New York |
| 87 | Samuel Bowman | 65 | Head | Painter | England |
| 88 | Hilda Bowman | 65 | Wife-H | None | Sweden |
| 89 | Edward Bowman | 40 | Son | Grinder | New York |
| 90 | August Kaufman | 31 | Head | Machinist | New York |
| 91 | Theodora Kaufman | 32 | Wife-H | None | New Jersey |
| 92 | Evelyn Kaufman | 5 | Daughter | None | New Jersey |
| 93 | Elaine Kaufman | 3 | Daughter | None | New Jersey |
| 94 | Walter Seckmann | 31 | Head | Tailor | New Jersey |
| 95 | Gertrude Seckmann | 30 | Wife-H | None | New Jersey |
| 96 | Dorothea Seckmann | 3 | Daughter | None | New Jersey |
| 97 | Paul Lyon | 23 | Head | Machinist | New Jersey |
| 98 | Helen Lyon | 18 | Wife-H | None | New Jersey |
| 99 | Stanley Wawryczak | 42 | Head | Tailor | Galicia |
| 100 | Sophie Wawryczak | 42 | Wife-H | None | Galicia |
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)