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Mary Monahan — 1920 US Census Record
Linked across censuses1920 United States Federal Census · New York, New York
Our Model Tree links this Mary Monahan across the 1900, 1910 and 1920 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a spouse (b.~1872), then head of a 10-person household.
Age 48
b. ~1872
Female
Spouse
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | New York, New York |
| Surname | Monahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | New York City |
| Est. Birth Year | ~1872 |
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 |
|---|---|---|---|---|
| Helen Monahan | Daughter | — | 20 | ~1900 |
| Margaret Monahan | Daughter | — | 19 | ~1901 |
| Mary Monahan | Spouse | — | 48 | ~1872 |
| Josephine Monahan | Daughter | — | 17 | ~1903 |
| Patrick Monahan | Son | — | 8 | ~1912 |
| William Monahan | Son | — | 6 | ~1914 |
| Thomas Monahan | Head | — | 64 | ~1856 |
| Mary Monahan | Daughter | — | 21 | ~1899 |
| Thomas Monahan | Son | — | 11 | ~1909 |
| Barbara Monahan | Daughter | — | 12 | ~1908 |
Census Appearances
1900
New York, …
Spouse, age 29
New York, New York · implied b. ~1871 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Nov |
| Birth Year | 1871 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
New York, …
Spouse, age 37
New York, New York · implied b. ~1873 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 14 |
| Children Born | 2 |
| Children Living | 2 |
| Year of Immigration | 1887 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
New York, …
Spouse, age 48
New York, New York · implied b. ~1872 — 10 household members
| Surname | Monahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| 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 Monahan across 3 US Census years (1900, 1910 and 1920) in New York, New York, using XGBoost record linkage.
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This person
Anchor record
Mary Monahan
Spouse · 1920 · age 48 · b. ~1872 · New York
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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 — New York, New York
Open full size
1920 US Federal Census — New York, New York
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1189unit:0047)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Carl Jr. Mickens | 10 | Son | — | New York |
| 52 | Martha Mickens | 6 | Daughter | — | New York |
| 53 | Arthur Mickens | 4 | Son | — | New York |
| 54 | Ethel Mickens | 2 | Daughter | — | New York |
| 55 | Erick Kulpus | 29 | Lodger | Boatswain | Sweden |
| 56 | — | None | — | — | — |
| 57 | William Langan | 32 | Head | Smith | New York |
| 58 | Theresa Langan | 29 | Wife | — | New York |
| 59 | Loretta Langan | 7 | Daughter | — | New York |
| 60 | John Langan | 5 | Son | — | New York |
| 61 | Edward Langan | 3 | Son | — | New York |
| 62 | Dorothy Langan | 1 | Daughter | — | New York |
| 63 | John Higgins | 20 | Boarder | Freight Handler | New York |
| 64 | Mary Ryan | 37 | Head | Operator | New York |
| 65 | Drake Cassidy | 31 | Head | — | New York |
| 66 | Anna Cassidy | 11 | Daughter | — | New York |
| 67 | John Cassidy | 7 | Son | — | New York |
| 68 | Helen Fleming | 25 | Boarder | Packer | Ireland |
| 69 | Louis Rohrer | 63 | Head | Proprietor | Germany |
| 70 | Jennie Rohrer | 47 | Wife | — | Hungary |
| 71 | Solomon Rohrer | 25 | Son | Proprietor | New York |
| 72 | Dorothy Rohrer | 19 | Daughter | Stenographer | Austria |
| 73 | Sarah Rohrer | 14 | Sister | — | Austria |
| 74 | Barbara Lefut | 53 | Head | — | Germany |
| 75 | Fred Lefut | 20 | Son | Driver | New York |
| 76 | Anna Lefut | 17 | Daughter | Saleslady | New York |
| 77 | Cornelius Lefut | 15 | Son | Messenger | New York |
| 78 | John Lefut | 12 | Son | — | New York |
| 79 | Adam Kilian | 51 | Head | Watchman | Germany |
| 80 | Sarah Kilian | 47 | Wife | — | Germany |
| 81 | Peter A. Kilian | 26 | Son | Clerk | New York |
| 82 | Margaret Kilian | 24 | Daughter | Operator | New York |
| 83 | Elizabeth Kilian | 22 | Daughter | Saleslady | New York |
| 84 | Anna Kilian | 20 | Daughter | Clerk | New York |
| 85 | Joseph O'Brien | 26 | Head | Driver | New York |
| 86 | Evelyn O'Brien | 25 | Wife | — | New York |
| 87 | Frances O'Brien | 3 | Daughter | — | New York |
| 88 | William Young | 57 | Uncle | Driver | New York |
| 89 | Lizzie Donnelly | 22 | Cousin | Freight Handler | New York |
| 90 | Thomas Monahan | 64 | Head | Fireman | Ireland |
| 91 | Mary Monahan THIS PERSON | 48 | Wife | — | Ireland |
| 92 | Mary Monahan | 21 | Daughter | Clerk | New York |
| 93 | Helen Monahan | 20 | Daughter | Clerk | New York |
| 94 | Margaret Monahan | 19 | Daughter | Operator | New York |
| 95 | Josephine Monahan | 17 | Daughter | Operator | New York |
| 96 | Barbara Monahan | 12 | Daughter | — | New York |
| 97 | Thomas J. Monahan | 11 | Son | — | New York |
| 98 | Patrick J. Monahan | 8 | Son | — | New York |
| 99 | William B. Monahan | 6 | Son | — | New York |
| 100 | Patrick Ancon | 64 | Head | Watchman | New York |
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)