MP
Mary Post — 1920 US Census Record
Model Tree available1920 United States Federal Census · Union, New Jersey
Our Model Tree links this Mary Post across the 1920, 1930 and 1940 US Censuses in Union, New Jersey (XGBoost, ~Confirmed), with identified parents Benjamin & Ephraim — first a daughter (b.~1909), then head of a 3-person household.
Age 11
b. ~1909
Female
Daughter
Born: New Jersey
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Union, New Jersey |
| Surname | Post |
| Given Name | Mary K. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Plainfield 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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Christine Post | Spouse | — | 43 | ~1877 |
| Mary Post | Daughter | — | 11 | ~1909 |
| Matthew Post | Head | — | 41 | ~1879 |
Census Appearances
1920
Union, New …
Daughter, age 11
Union, New Jersey · implied b. ~1909 — 3 household members
| Surname | Post |
| Given Name | Mary K. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Union, New …
Daughter, age 21
Union, New Jersey · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Post |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Clerk |
| Industry | Elec. Truck Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Union-County, New …
Daughter, age 31
Union-County, New Jersey · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Post |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Elizabeth |
| 1935 Residence (County) | Union |
| Occupation | physical ed. teacher |
| Industry | public schools |
| Class of Worker | GW |
| Hours Worked | 25 |
| Income (1939) | 170 |
| Highest Grade | C-4 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Mary Post across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Benjamin Post (~0.92 confidence) and father Ephraim Post (~0.92 confidence) and father Matthew Post (~0.92 confidence) and mother Christine Post (~0.92 confidence) and mother Mary Post (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Benjamin Post
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Ephraim Post
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Matthew Post
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Christine Post
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Mary Post
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Post
Daughter · 1920 · age 11 · b. ~1909 · New Jersey
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Union, New Jersey
Open full size
1920 US Federal Census — Union, New Jersey
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1071unit:1169)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | William Groves | 20 | son | Chauffeur | New Jersey |
| 52 | W. W. Wilson | 59 | Head | Merchant | Delaware |
| 53 | Catherine E. Wilson | 61 | wife | None | New Jersey |
| 54 | William F. Wilson | 31 | son | Real Estate | New Jersey |
| 55 | Walter Wilson | 30 | son | Chauffeur | New Jersey |
| 56 | John A. Wilson | 26 | son | Contractor | New Jersey |
| 57 | Tiffany F. Wilson | 25 | daughter | Bookkeeper | New Jersey |
| 58 | Della Wilson | 19 | daughter | Clerk | New Jersey |
| 59 | Catherine Wilson | 9 | granddaughter | None | New Jersey |
| 60 | Veronica Wilson | 7 | granddaughter | None | New Jersey |
| 61 | William F. Wilson | 6 | grandson | None | New Jersey |
| 62 | Patrick Collieray | 30 | Head | Machinist | Ireland |
| 63 | Delia Collieray | 28 | wife | None | Ireland |
| 64 | Catherine Collieray | 6 | daughter | None | New Jersey |
| 65 | Ernest Passant | 23 | roomer | Machinist | Italy |
| 66 | Delia Coyne | 20 | roomer | Machine Oper | Ireland |
| 67 | Clarence H. Walden | 41 | Head | Clerk | New Jersey |
| 68 | Bridget Walden | 40 | wife | None | Ireland |
| 69 | William Lafferty | 34 | Head | Moulder | Ireland |
| 70 | Helen Lafferty | 29 | wife | None | New Jersey |
| 71 | Julia Lafferty | 3 | daughter | None | New Jersey |
| 72 | Helen Lafferty | 1 | daughter | None | New Jersey |
| 73 | George Friday | 69 | Head | Laborer | New Jersey |
| 74 | Christine Friday | 65 | wife | None | New Jersey |
| 75 | Michael Murrie | 49 | Head | Conductor | Ireland |
| 76 | Mary Murrie | 36 | wife | None | New Jersey |
| 77 | Joseph Murrie | 9 | son | None | New Jersey |
| 78 | Vincent Murrie | 3 | son | None | New Jersey |
| 79 | Charles Klein | 42 | Head | Manager Apt | Germany |
| 80 | Fanny Klein | 36 | wife | None | New Jersey |
| 81 | Clara Klein | 15 | daughter | None | New Jersey |
| 82 | Marie Klein | 14 | daughter | None | New Jersey |
| 83 | Charles Klein | 12 | son | None | New Jersey |
| 84 | Rose Klein | 10 | daughter | None | New Jersey |
| 85 | Thomas Klein | 8 | son | None | New Jersey |
| 86 | Jack Klein | 6 | son | None | New Jersey |
| 87 | William Klein | 3 | son | None | New Jersey |
| 88 | Bernard Klein | 2 | son | None | New Jersey |
| 89 | Mary Klein | 58 | sister | None | New Jersey |
| 90 | Matthew D. Post | 41 | Head | Bookkeeper | New Jersey |
| 91 | Christine Post | 43 | wife | None | New Jersey |
| 92 | Mary K. Post THIS PERSON | 11 | daughter | None | New Jersey |
| 93 | William Vogel | 41 | Head | Machinist | Germany |
| 94 | Maud M. Vogel | 43 | wife | None | Pennsylvania |
| 95 | Harry Goldstein | 30 | Head | Salesman | Russia |
| 96 | Ida Goldstein | 25 | wife | None | Russia |
| 97 | Morris Goldstein | 5 | son | None | New Jersey |
| 98 | Rose Goldstein | 2 | daughter | None | New Jersey |
| 99 | Harry Brown | 36 | Head | Merchant | Romania |
| 100 | Rose Brown | 35 | wife | None | Austria |
Pedigree Summary
Mary
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 1920 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)