MC
Mary Conrad — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Union, New Jersey
Our Model Tree links this Mary Conrad across the 1930 and 1940 US Censuses in Union, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 8-person household.
Age 11
b. ~1919
Female
Daughter
Born: New Jersey
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Union, New Jersey |
| Surname | Conrad |
| Given Name | Mary Louise |
| 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 | |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Plainfield City |
| Est. Birth Year | ~1919 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Laura Conrad | Daughter | — | 22 | ~1908 |
| Anna Conrad | Other | — | 50 | ~1880 |
| Mary Conrad | Daughter | — | 11 | ~1919 |
| Daniel Conrad | Head | — | 49 | ~1881 |
| Alice Conrad | Daughter | — | 24 | ~1906 |
| R Conrad | Son | — | 15 | ~1915 |
| Daniel Conrad | Son | — | 16 | ~1914 |
| Elizabeth Conrad | Daughter | — | 13 | ~1917 |
Census Appearances
1930
Union, New …
Daughter, age 11
Union, New Jersey · implied b. ~1919 — 8 household members
| Surname | Conrad |
| Given Name | Mary Louise |
| 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 |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Union-County, New …
Daughter, age 21
Union-County, New Jersey · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conrard |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Plainfield |
| 1935 Residence (County) | Union |
| Occupation | Stenographer |
| Industry | Dept Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| 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 Conrad across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Conrad
Daughter · 1930 · age 11 · b. ~1919 · New Jersey
★ You are viewing this record
Sibling
Alice Conrad
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
R Conrad
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laura Conrad
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Conrad
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Conrad
Sibling · 1930 · age 13
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 — Union, New Jersey
Open full size
1930 US Federal Census — Union, New Jersey
Page Contents
50 people indexed on this census page (ia:1930:newjerseycensus00reel1389:0022)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | William J. Shotwell | 55 | Head | Retired | New York |
| 52 | Clara E. Shotwell | 44 | Wife-H | — | New York |
| 53 | Sidney G. Shotwell | 22 | Son | Salesman | New York |
| 54 | Myra F. Shotwell | 20 | Daughter | Secretary | New York |
| 55 | Nicholas G. Loupos | 63 | Head | Merchant | Greece |
| 56 | Olga N. Loupos | 60 | Wife-H | — | Ohio |
| 57 | Charles H. Field | 32 | Head | Mechanist | New York |
| 58 | Mabel Field | 31 | Wife-H | — | Connecticut |
| 59 | William A. Hamilton | 65 | Head | Yard Foreman | New Jersey |
| 60 | Georgiana Hamilton | 62 | Wife-H | — | New Jersey |
| 61 | Elsie Mae Hamilton | 22 | Daughter | Secretary | New Jersey |
| 62 | Charles E. Arcel | 72 | Head | Contractor | New Jersey |
| 63 | Clara M. Arcel | 70 | Wife-H | — | New Jersey |
| 64 | Katherine M. Arcel | 35 | Daughter | — | New Jersey |
| 65 | Charles L. Moore | 48 | Head | Dentist | Pennsylvania |
| 66 | Sadie H. Moore | 44 | Wife-H | — | New York |
| 67 | Donald L. Moore | 21 | Son | — | New Jersey |
| 68 | Elizabeth L. Moore | 20 | Daughter | — | New Jersey |
| 69 | Charles L. Jr. Moore | 15 | Son | — | New Jersey |
| 70 | Herbert H. Burgess | 58 | Head | Bookkeeper | New York |
| 71 | Emma F. Burgess | 63 | Sister-H | — | New Jersey |
| 72 | Rachel V. Burleigh | 21 | Piece | Hair Dresser | New Jersey |
| 73 | Daniel J. Conrad | 49 | Head | Clerk | New Jersey |
| 74 | Anna G. Conrad | 50 | Wife-H | — | New Jersey |
| 75 | Alice M. Conrad | 24 | Daughter | Teacher | New Jersey |
| 76 | Laura G. Conrad | 22 | Daughter | — | New Jersey |
| 77 | Daniel J. Jr. Conrad | 16 | Son | — | New Jersey |
| 78 | R. Charles Conrad | 15 | Son | — | New Jersey |
| 79 | Elizabeth F. Conrad | 13 | Daughter | — | New Jersey |
| 80 | Mary Louise Conrad THIS PERSON | 11 | Daughter | — | New Jersey |
| 81 | Kate E. Hammond | 67 | Head-H | — | Virginia |
| 82 | George D. Hammond | 43 | Son | Advertising | Virginia |
| 83 | Hazel O. Hammond | 30 | Daughter | Secretary | England |
| 84 | Katherine M. Hammond | 17 | Daughter | — | New Jersey |
| 85 | Louis A. Miller | 41 | Head | Laborer | New Jersey |
| 86 | Adeline C. Miller | 34 | Wife-H | — | Norway |
| 87 | Carl M. Miller | 9 | Son | — | New Jersey |
| 88 | Philip L. Miller | 7 | Daughter | — | New Jersey |
| 89 | Gustav E. Miller | 6 | Son | — | New Jersey |
| 90 | Nanny Parson | 26 | Cousin | — | Norway |
| 91 | Greta Parson | 1 | Cousin | — | New Jersey |
| 92 | Steve Slota | 35 | Head | Laborer | Italy |
| 93 | Anna S. Slota | 43 | Wife-H | — | Russia |
| 94 | Stanley Kroczynski | 38 | Head | Weaver | Poland |
| 95 | Betty Kroczynski | 24 | Wife-H | — | Poland |
| 96 | Leo Kroczynski | 4 | Son | — | New Jersey |
| 97 | Irene H. Kroczynski | 3 | Daughter | — | New Jersey |
| 98 | John Jr. Lelinko | 25 | Head | Laborer | Pennsylvania |
| 99 | Anna M. Lelinko | 23 | Wife-H | — | New Jersey |
| 100 | Mary Michelin | 66 | Head-H | — | Poland |
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)