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Mary Monahan — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Mary Monahan across the 1900, 1910 and 1920 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1865), then head of a 7-person household.
Age 55
b. ~1865
Female
Head
Born: Ireland
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Suffolk, Massachusetts |
| Surname | Monahan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | City Of Boston |
| Est. Birth Year | ~1865 |
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.
7 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Monahan | Daughter | — | 19 | ~1901 |
| James Monahan | Son | — | 25 | ~1895 |
| Mary Monahan | Head | — | 55 | ~1865 |
| Rose Monahan | Daughter | — | 21 | ~1899 |
| Lillian Monahan | Daughter | — | 15 | ~1905 |
| Andrew Monahan | Son | — | 27 | ~1893 |
| Helen Monahan | Daughter | — | 28 | ~1892 |
Census Appearances
1900
Suffolk, Massachusetts
Head, age 38
Suffolk, Massachusetts · implied b. ~1862 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Meonohan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Birth Month | June |
| Birth Year | 1862 |
| Year of Immigration | 1881 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Washing |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Suffolk, Massachusetts
Head, age 45
Suffolk, Massachusetts · implied b. ~1865
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Monahan |
| Given Name | Mary A |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Children Born | 0 |
| Children Living | 0 |
| Year of Immigration | 1882 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | General work |
| Industry | Works out |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Suffolk, Massachusetts
Head, age 55
Suffolk, Massachusetts · implied b. ~1865 — 7 household members
| Surname | Monahan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1880 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| 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 Suffolk, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
Mary Monahan
Head · 1920 · age 55 · b. ~1865 · Massachusetts
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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 — Suffolk, Massachusetts
Open full size
1920 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu735unit:0976)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Wild | 65 | Head | Seamstress | England |
| 2 | Frank A Wild | 46 | Son | Painter | Massachusetts |
| 3 | John Kearney | 55 | Head | Horse Car Driver | Ireland |
| 4 | Maria Kearney | 51 | Wife | — | Ireland |
| 5 | Frederick E Kearney | 23 | Son | Order Clerk | Massachusetts |
| 6 | Catherine Kearney | 20 | Daughter | Saleswoman | Massachusetts |
| 7 | Helen F Kearney | 18 | Daughter | Stenographer | Massachusetts |
| 8 | Esther V Kearney | 15 | Daughter | — | Massachusetts |
| 9 | Alice M Kearney | 13 | Daughter | — | Massachusetts |
| 10 | Margaret E Kearney | 12 | Daughter | — | Massachusetts |
| 11 | John F Kearney | 9 | Son | — | Massachusetts |
| 12 | Michael J Brady | 30 | Head | Operator Camera | Ireland |
| 13 | Bridget Brady | 33 | Wife | — | Ireland |
| 14 | John E Brady | 4 | Son | — | Massachusetts |
| 15 | Mary Monahan THIS PERSON | 55 | Head | — | Ireland |
| 16 | Helen A Monahan | 28 | Daughter | Forelady | Massachusetts |
| 17 | Andrew J Monahan | 27 | Son | Chief Pharmacist Mate | Massachusetts |
| 18 | James F Monahan | 25 | Son | Foreman | Massachusetts |
| 19 | Rose M Monahan | 21 | Daughter | Stitcher | Massachusetts |
| 20 | Elizabeth V Monahan | 19 | Daughter | Stenographer | Massachusetts |
| 21 | Lillian G Monahan | 15 | Daughter | — | Massachusetts |
| 22 | James J O'Connor | 35 | Head | Printing | Massachusetts |
| 23 | Anna F O'Connor | 38 | Wife | — | Massachusetts |
| 24 | Harold W O'Connor | 11 | Son | — | Massachusetts |
| 25 | Arthur C O'Connor | 8 | Son | — | Massachusetts |
| 26 | Rose E O'Connor | 6 | Daughter | — | Massachusetts |
| 27 | Marguerite C O'Connor | 5 | Daughter | — | Massachusetts |
| 28 | Edward G O'Connor | 1 | Son | — | Massachusetts |
| 29 | Albert Howard | 27 | Head | Porter | Massachusetts |
| 30 | Gladys R Howard | 24 | Wife | — | Massachusetts |
| 31 | Albert J Howard | 3 | Son | — | Massachusetts |
| 32 | Elizabeth Fallon | 55 | Lodger | Housework | Ireland |
| 33 | Mary A Shields | 53 | Head | — | Ireland |
| 34 | Luke J Shields | 30 | Son | Real Estate Broker | Massachusetts |
| 35 | John J Shields | 26 | Son | — | Massachusetts |
| 36 | Catherine E Shields | 24 | Daughter | — | Massachusetts |
| 37 | Mary M Shields | 22 | Daughter | — | Massachusetts |
| 38 | Catherine Lavelle | 55 | Sister | Proprietor | Ireland |
| 39 | Alexander Elliott | 40 | Head | Ironworker | Canada |
| 40 | Mary Elliott | 35 | Wife | — | Ireland |
| 41 | George G Elliott | 18 | Son | Machinist | Massachusetts |
| 42 | Joseph Elliott | 13 | Son | — | Massachusetts |
| 43 | Francis Elliott | 8 | Son | — | Massachusetts |
| 44 | Isabel Elliott | 5 | Daughter | — | Massachusetts |
| 45 | Catherine Galvin | 35 | Head | Waitress | Pennsylvania |
| 46 | Catherine Galvin | 10 | Daughter | — | Massachusetts |
| 47 | Mary Galvin | 8 | Daughter | — | Massachusetts |
| 48 | Helen Galvin | 5 | Daughter | — | Massachusetts |
| 49 | John Galvin | 4 | Son | — | Massachusetts |
| 50 | Margaret Galvin | 40 | Sister | Housework | Ireland |
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)