MD
Mary Donnelly — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Essex, Massachusetts
Our Model Tree links this Mary Donnelly across the 1900, 1910 and 1920 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1871), then head of a 7-person household.
Age 49
b. ~1871
Female
Spouse
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Essex, Massachusetts |
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1885 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Wet Finisher |
| Industry | Worsted Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Wet Finisher |
| Township / Ward | Lawrence City |
| Est. Birth Year | ~1871 |
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 |
|---|---|---|---|---|
| Alice Donnelly | Daughter | — | 10 | ~1910 |
| Helen Donnelly | Daughter | — | 7 | ~1913 |
| Margaret Donnelly | Daughter | — | 19 | ~1901 |
| Matthew Donnelly | Head | — | 49 | ~1871 |
| Thomas Donnelly | Son | — | 14 | ~1906 |
| Joseph Donnelly | Son | — | 13 | ~1907 |
| Mary Donnelly | Spouse | — | 49 | ~1871 |
Census Appearances
1900
Suffolk, Massachusetts
Spouse, age 31
Suffolk, Massachusetts · implied b. ~1869 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | Aug |
| 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
Essex, Massachusetts
Spouse, age 40
Essex, Massachusetts · implied b. ~1870 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 6 |
| Children Born | 1 |
| Children Living | 1 |
| Year of Immigration | 1882 |
| 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
Essex, Massachusetts
Spouse, age 49
Essex, Massachusetts · implied b. ~1871 — 7 household members
| Surname | Donnelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1885 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Wet Finisher |
| Industry | Worsted Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| 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 Donnelly across 3 US Census years (1900, 1910 and 1920) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Donnelly
Spouse · 1920 · age 49 · b. ~1871 · 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 — Essex, Massachusetts
Open full size
1920 US Federal Census — Essex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu693unit:0464)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Francis L Sullivan | 26 | — | Conductor | Massachusetts |
| 2 | Marion L Sullivan | 21 | Daughter | — | Massachusetts |
| 3 | Mary A Kelley | 54 | Head | Teacher | Ireland |
| 4 | James J Kelley | 49 | Nephew | Clerk | Massachusetts |
| 5 | Cornelius Mullady | 46 | Head | Roll Cover | Ireland |
| 6 | Margaret Mullady | 37 | Wife | Watchman | Ireland |
| 7 | Mary Mullady | 12 | Daughter | — | Massachusetts |
| 8 | Nora Mullady | 10 | Daughter | — | Massachusetts |
| 9 | Margaret Mullady | 9 | Daughter | — | Massachusetts |
| 10 | Cornelius Mullady | 7 | Son | — | Massachusetts |
| 11 | Rita Mullady | 4 | Daughter | — | Massachusetts |
| 12 | Mary Kelley | 60 | Mother in law | — | Ireland |
| 13 | James A Molloy | 46 | Head | English Weaver | Massachusetts |
| 14 | Mary J Molloy | 45 | Wife | Shipping Clerk | Massachusetts |
| 15 | Margaret Molloy | 23 | Daughter | — | Massachusetts |
| 16 | Annie Molloy | 22 | Daughter | Spooler Hand | Massachusetts |
| 17 | George Molloy | 16 | Son | Spooler Hand | Massachusetts |
| 18 | Arthur Molloy | 14 | Son | Shipper | Massachusetts |
| 19 | James Molloy | 12 | Son | Office Boy | Massachusetts |
| 20 | Frank Molloy | 10 | Son | — | Massachusetts |
| 21 | Joseph Molloy | 7 | Son | — | Massachusetts |
| 22 | Thomas Hoye | 50 | Head | — | New Hampshire |
| 23 | Margaret Hoye | 50 | Wife | Foreman | Ireland |
| 24 | Elizabeth Hoye | 24 | Daughter | — | Massachusetts |
| 25 | Margaret Hoye | 21 | Daughter | Drawing | Massachusetts |
| 26 | Mary Hoye | 18 | Daughter | Examiner | New Hampshire |
| 27 | Anastasia Hoye | 16 | Daughter | Spooler Hand | New Hampshire |
| 28 | Thomas Hoye | 14 | Son | Spooler Hand | New Hampshire |
| 29 | John Hoye | 11 | Son | — | New Hampshire |
| 30 | Matthew Donnelly | 49 | Head | — | Ireland |
| 31 | Mary Donnelly THIS PERSON | 49 | Wife | Wet Finisher | Ireland |
| 32 | Margaret Donnelly | 19 | Daughter | — | Massachusetts |
| 33 | Thomas Donnelly | 14 | Son | Steamfitter | Massachusetts |
| 34 | Joseph Donnelly | 13 | Son | Office Boy | Massachusetts |
| 35 | Alice Donnelly | 10 | Daughter | — | Massachusetts |
| 36 | Helen Donnelly | 7 | Daughter | — | Massachusetts |
| 37 | John Mccann | 42 | Head | — | England |
| 38 | Sophie Mccann | 39 | Wife | Laborer | Massachusetts |
| 39 | Elizabeth Mccann | 16 | Daughter | Weaver | Massachusetts |
| 40 | Patrick Clark | 48 | Head | Banker | Ireland |
| 41 | Annie Clark | 49 | Wife | Laborer | Ireland |
| 42 | Mary Clark | 23 | Daughter | — | Massachusetts |
| 43 | Michael J Clark | 21 | Son | Spooler Hand | Massachusetts |
| 44 | Margaret Clark | 19 | Daughter | Spooler Hand | Massachusetts |
| 45 | Alice Clark | 17 | Daughter | Spooler Hand | Massachusetts |
| 46 | Frank Clark | 14 | Son | — | Massachusetts |
| 47 | Annie Clark | 12 | Daughter | — | Massachusetts |
| 48 | Martin Clark | 10 | Son | — | Massachusetts |
| 49 | Margaret Monahan | 46 | Head | — | Ireland |
| 50 | Anna Monahan | 44 | Daughter | Folder | Massachusetts |
Related Census Records
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)