MC
Mary Cassidy — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Union, New Jersey
Our Model Tree links this Mary Cassidy across the 1900, 1910 and 1920 US Censuses in Union, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1874), then head of a 10-person household.
Age 46
b. ~1874
Female
Spouse
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Union, New Jersey |
| Surname | Cassidy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1896 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1901 |
| Birthplace (normalized) | ireland |
| Township / Ward | Elizabeth City |
| Est. Birth Year | ~1874 |
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.
10 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cassidy | Daughter | — | 17 | ~1903 |
| Irma Cassidy | Daughter | — | 15 | ~1905 |
| Catherine Cassidy | Daughter | — | 10 | ~1910 |
| Dennis Cassidy | Head | — | 49 | ~1871 |
| Michael Tiernan | Other | — | 24 | ~1896 |
| Catherine Kenney | Other | — | 21 | ~1899 |
| Thomas Cassidy | Son | — | 23 | ~1897 |
| James Cassidy | Son | — | 12 | ~1908 |
| Thomas Cassidy | Son | — | 16 | ~1904 |
| Mary Cassidy | Spouse | — | 46 | ~1874 |
Census Appearances
1900
Union, New …
Spouse, age 31
Union, New Jersey · implied b. ~1869 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | May |
| Birth Year | 1869 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Union, New …
Spouse, age 37
Union, New Jersey · implied b. ~1873 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 15 |
| Children Born | 7 |
| Children Living | 7 |
| Year of Immigration | 1882 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Union, New …
Spouse, age 46
Union, New Jersey · implied b. ~1874 — 10 household members
| Surname | Cassidy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1896 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1901 |
| Birthplace (normalized) | ireland |
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 Cassidy across 3 US Census years (1900, 1910 and 1920) in Union, New Jersey, using XGBoost record linkage.
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This person
Anchor record
Mary Cassidy
Spouse · 1920 · age 46 · b. ~1874 · New Jersey
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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:1920:14thcensusofpopu1070unit:0596)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Wilkes | 53 | Head | — | England |
| 2 | Mary Wilkes | 55 | Sister | — | England |
| 3 | Sarah Seeger | 63 | Niece | — | New Jersey |
| 4 | Theodore Hellerson | 60 | Head | Laborer | Virginia |
| 5 | Dennis Cassidy | 49 | Head | Proprietor | Ireland |
| 6 | Mary Cassidy THIS PERSON | 46 | Wife | — | Ireland |
| 7 | Thomas Jos Cassidy | 23 | Son | — | New Jersey |
| 8 | Mary Cassidy | 17 | Daughter | Stenographer | Ireland |
| 9 | Thomas Cassidy | 16 | Son | — | Ireland |
| 10 | Irma Cassidy | 15 | Daughter | — | New Jersey |
| 11 | James Cassidy | 12 | Son | — | New Jersey |
| 12 | Catherine Cassidy | 10 | Daughter | — | New Jersey |
| 13 | Michael Tiernan | 24 | Boarder | Riveter | Ireland |
| 14 | Catherine Kenney | 21 | Niece | — | Ireland |
| 15 | Julia Seigel | 65 | Head | Merchant | New Jersey |
| 16 | Wilhelmina Kohler | 86 | Mother | — | Prussia |
| 17 | William Kohler | 63 | Brother | Laborer | New Jersey |
| 18 | Joseph N Maxey | 33 | Head | Foreman | Ireland |
| 19 | Mary F Maxey | 29 | Wife | — | Ireland |
| 20 | Emil Duban | 41 | Head | Foreman | Canada |
| 21 | Sarah Duban | 42 | Wife | — | Canada |
| 22 | Joseph Duban | 15 | Son | Apprentice | New Jersey |
| 23 | Emil Duban | 14 | Son | Office Boy | New Jersey |
| 24 | Eva Duban | 10 | Daughter | — | New Jersey |
| 25 | Honore Duban | 11 | Daughter | — | New Jersey |
| 26 | Gerard Duban | 8 | Son | — | Canada |
| 27 | Emily Duban | 65 | Mother | — | Canada |
| 28 | Catherine Pryor | 73 | Head | — | Ireland |
| 29 | Anna Vaughan | 10 | Granddaughter | — | New York |
| 30 | Michael Clancy | 40 | Head | Laborer | Ireland |
| 31 | Mary Clancy | 36 | Wife | — | Ireland |
| 32 | Thomas Clancy | 10 | Son | — | New Jersey |
| 33 | Mary M Clancy | 9 | Daughter | — | New Jersey |
| 34 | James Clancy | 6 | Son | — | New Jersey |
| 35 | John Clancy | 3 | Son | — | New Jersey |
| 36 | Genevieve Clancy | 1 | Daughter | — | New Jersey |
| 37 | Mary O'Keefe | 33 | Head | — | Pennsylvania |
| 38 | James O'Keefe | 9 | Son | — | New Jersey |
| 39 | Charles O'Keefe | 7 | Son | — | New Jersey |
| 40 | Bertha O'Keefe | 3 | Daughter | — | New Jersey |
| 41 | Joseph T Coughlin | 31 | Head | Policeman | Connecticut |
| 42 | Delia Coughlin | 23 | Wife | — | Ireland |
| 43 | Joseph Jr Coughlin | 4 | Son | — | Connecticut |
| 44 | John Coughlin | 1 | Son | — | Connecticut |
| 45 | Adam S Mason | 50 | Lodger | Machinist | New York |
| 46 | Mary F Mason | 14 | Lodger | — | New York |
| 47 | Peter Dotto | 53 | Head | Proprietor | Italy |
| 48 | Sarafina Dotto | 53 | Wife | — | Italy |
| 49 | William Bingham | 35 | Head | Gardener | New Jersey |
| 50 | Frank David | 27 | Lodger | Laborer | New Jersey |
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)